Welcome To Rapture -- Medical Pavilion (19 Total)
*1. New Year's Eve Alone (Diane McClintock) - Kashmir Bottom Floor, on table.

*2. Hole in the Bathroom Wall (Steve Barker) - Kashmir Restaraunt, in "Dames" Restroom.

3. Released Today (Diane McClintock) - Medical Pavilion Foyer, on the reception desk.

4. Adam's Changes (Steinman) - Emergency Access, on the desk.

5. Higher Standards (Steinman) - Medical Pavilion Foyer, on the wall near the entrance

6. Parasite Expectations (Andrew Ryan) - Medical Pavilion Foyer, on the reception desk near surgery.

7. Limits of Imagination (Steinman) - Medical Pavilion Foyer, on the wall near hall towards Eternal Flame.

8. Love for Science (Tenenbaum) - Medical Pavilion Foyer, in lobby near Health Station

9. Vandalism (Andrew Ryan) - Medical Pavilion Foyer, near vending machines.

10. Freezing Pipes (McDonagh) - Medical Pavilion Foyer, near base of stairs.

11. Surgery's Picasso (Steinman) - Eternal Flame, in the entrance room near the memorial.

12. Enrage Trial (Suchong) - Kure All, on the floor in the corner of the main room.

13. Plasmids are the Paint (Suchong) - Painless Dental, on the desk in the corner near the stuffed bear.

14. Useless Experiments (Tenenbaum) - Dandy Dental, on the floor near the entrance to the offices.

15. Testing Telekinesis (Suchong) - Dandy Dental, on the floor near the Gatherer's Garden vending machine.

16. Symmetry (Steinman) - Surgery Foyer, on the wall beyond the pile of debris.

17. Aphrodite Waking (Steinman) - Surgery, on a desk in the operating room to the north.

18. Not What She Wanted (Steinman) - Surgery, search the corpse that Dr. Steinman was operating on.

19. Gatherer's Vulnerability (Steinman) - Lounge, on ground near Gatherer's Garden vending machine.

Neptune's Bounty -- Smuggler's Hideout (22 Total)

20. Bathysphere Keys (Sullivan) - Lower Wharf, under the boardwalk on the south end of the wharf.

21. Timmy H. Interrogation (Sullivan) - Lower Wharf, in the interrogation room in the water.

22. Fontaine Must Go (Andrew Ryan) - Lower Wharf, crawl under the metal grating near the pipes.

23. Finding the Sea Slug (Tenenbaum) - Upper Wharf, on the table across from the stairwell entrance.

24. Masha Come Home (Mariska Lutz) - Upper Wharf, on the floor in the corner where Little Sister was.

25. Picked up Timmy H. (Sullivan) - Upper Wharf, search the corpse in the corner near Little Sister.

26. Watch Fontaine (Andrew Ryan) - Upper Wharf, next to Circus of Values machine.

27. Have My Badge (Sullivan) - Wharf's Master Office, on the desk in the office.

28. Adam Discovery (Tenenbaum) - Upper Wharf, in a crate below the ledge in the Wharfmaster's office.

29. Eden Leaking (McDonagh) - Upper Wharf, in hallway on way to Jet Postal.

30. Fontaine's Smugglers (Tenenbaum) - Jet Postal, on the bench in the glass tube.

31. Death Penalty in Rapture (Andrew Ryan) - Jet Postal, on the desk near the vending machine.

32. Smuggling Ring (Sullivan) - Fighting McDonagh, on the bar of table near the center of the room.

33. Working Late Again (Andrew Ryan) - Fighting McDonagh, on a bar table near the windows.

34. Rapture Changing (McDonagh) - Fighting McDonagh, on the desk in the large office in the basement.

35. Meeting Ryan (McDonagh) - Fighting McDonagh, crawl through the water-filled ventiliation back towards the Gene Bank and entrance.

36. Arresting Fontaine (McDonagh) - Fighting McDonagh, in room #6 upstairs.

37. Saw Masha Today (Mariska Lutz) - Fighting McDonagh, in room #7 upstairs.

38. Putting the Screws On (Peach Wilkins) - Freezer Bottom Floor, in the freezer next to the safe.

39. Meeting with Fontaine (Peach Wilkins) - Storage Cave, on the ground near the numerous crates.

40. Kraut Scientist (Frank Fontaine) - Control Room, in the locked storage cave on the lower floor.

41. Offered a Deal (Peach Wilkins) - Submarine Bay, on the dock leading towards Arcadia.

Arcadia -- Farmer's Market (25 Total)

42. Seeing Ghosts (McDonagh) - Tea Garden, on the ground off to the left.

43. Mass Producing Adam (Tenenbaum) - Tea Garden, on the ground near the chairs.

44. Big Night Out (Dieter Sonnekalb) - Tea Garden, on the ground near the park bench and ghosts.

45. Arcadia Closed (Langford) - Tea Garden, up the stairs on the desk near the Gene Bank.

46. The Market is Patient (Andrew Ryan) - Waterfall Grottos, on the park bench near the U-Invent machine of the upper level.

47. Early Tests Promising (Langford) - Waterfall Grottos, near the water wheel in the lower level.

48. Offer a Better Product (Andrew Ryan) - Waterfall Grottos, on the lower level near the water wheel.

49. Heroes and Criminals (Diane McClintock) - Waterfall Grottos, in the locked machinery room atop the stairs.

50. Shouldn't Have Come (Mariska Lutz) - Lower Rolling Hills, on the bench near the stairs.

51. The Saturnine (Langford) - Lower Rolling Hills, in the cave behind the waterfall.

52. Arcadia and Oxygen (Langford) - Tree Farm, near the crate on the landing entrance.

53. What Won't They Steal (Langford) - Research Laboratories, just inside the entance.

54. Teaching an Old Hound (Langford) - Research Laboratories, on the table inside the 2nd room.

55. Lazarus Vector (Langford) - Langford's Office, search Julie Langford's body.

56. Lazarus Vector Formula (Langford) - Langford's Office, inside the wall safe in Julie's lab.

57. Maternal Instinct (Tenenbaum) - Tree Farm, on the steps heading to Farmer's Market.

58. Bee Enzyme (Tasha Denu) - Farmer's Market Entrance, on the ground near the pneumo tube.

59. First Encounter (Andrew Ryan) - Farmer's Market, near the Bouncer corpse in the lower storage room.

60. Hatred (Tenenbaum) - Farmer's Market, on a desk in the lower storage room.

61. Desperate Times (Andrew Ryan) - Farmer's Market, in the crawlspace that links to the freezer.

62. Pulling Together (Andrew Ryan) - Farmer's Market, on the counter of the meat market.

63. Water in Wine (Pierre Gobbi) - Farmer's Market, upstairs near large winery sign.

64. Adam Explained (Tenenbaum) - Silverwing Apiary, on the counter near the entrance.

65. Functional Children (Tenenbaum) - Winery, on a table in the rear of the room.

66. The Great Chain (Andrew Ryan) - Arcadia Metro Station, on the bench to the right of the entrance.

Fort Frolic (15 Total)

67. Musical Insult (Sander Cohen) - Fleet Hall Theatre, upstairs storage room near the guitar.

68. The Doubters (Sander Cohen) - Cohen's Collection, on the table downstairs.

69. Come to the Record Store (Cobb) - Southern Mall, outside the restroom, on the table near the alcohol.

70. The Wild Bunny (Sander Cohen) - Sophia Salon, in the closet around the back of the counter.

71. Artist's Feud (Sullivan) - Cocktail Lounge, on the bar above the safe.

72. Fancy Cigarettes (Albert Milonakis) - Le Marquis D'Epogue, in the downstairs humidor near the corpse.

73. The Iceman Cometh (Martin Finnegan) - Frozen Tunnel, in the entrance corridor on the left-hand side.

74. Stood Up Again (Diane McCormick) - Upper Atrium, at the top of the stairs near the entrance to Fleet Hall.

75. Guns Blazing (McDonagh) - Robertson's Tobaccoria, on the table just inside the main door.

76. Pregnancy (Jasmine Jolene) - Eve's Garden, under the bed in the room behind the stage.

77. It's All Grift (Hector Rodriguez) - Eve's Garden, on the bar.

78. Fontaine's Army (McDonagh) - Sir-Prize, in a crate on the floor to the left of the stairs.

79. Bump Culpepper? (Sullivan) - Pharoah's Fortune, on a pool table upstairs.

80. Ryan's Stabbleboy (Anna Culpepper) - Rapture Records, behind the counter inside the entrance.

81. Requiem for Andrew Ryan (Sander Cohen) - Projection Booth, on the table in the office.

Hephaestus -- Rapture Central Control (20 Total)

82. Ryan Takes F Futuristics (McDonagh) - Hepheastus Bathyspher Station, in a crate near the Circus of Values machine.

83. Scoping the Gate (Kyburz) - Outside Ryan's Office, near the Circus of Values machine.

84. Stopping Ryan (McDonagh) - Ryan's Office, search the first corpse on the right-hand side.

85. Going to Heat Loss (Anya Andersdotter) - Outside Ryan's office, search the fourth corpse on the right-hand side.

86. A Man or a Parasite (Andrew Ryan) - - Hepheastus Core, on the desk outside the room with the bunks.

87. Fontaine's Legacy (McDonagh) - Hepheastus Core, on the edge of the walkway, near the Vita-Chamber.

88. Assassin (Anya Andersdotter) - Hepheastus Core, near the Gatherer's Garden.

89. Kyburz Door Code (Pablo Navarro) - Heat Loss Monitoring, on the floor in the corner.

90. Genetic Arms Race (McDonagh) - Lower Heat Loss Monitoring, on the desk in the flooded area.

91. Getting a Break (Pablo Navarro) - Lower Heat Loss Monitoring, on the desk near the tonic.

92. Impossible Anywhere Else (Andrew Ryan) - Hepheastus Core, at the very bottom walkway, on the desk.

93. Running Short on R-34s (Pablo Navarro) - Hepheastus Core, on the desk outside the entrance to the Workshops.

94. Device Almost Finished (Kyburz) - Lower Workshops, on the desk in the office at the bottom of the stairs.

95. Great Chain Moves Slowly (Andrew Ryan) - Kyburz's Office, on the desk in the back of the room.

96. The Dream (Kyburz) - Lower Workshops, search the corpse lying in the center of the floor.

97. Assembling the Bomb (Kyburz) - Lower Workshops, on the desk in the secret crawlspace office.

98. Market Maintenance Code (Pablo Navarro) - Lower Workshops, in the crawlspace that leads under the stairs.

*99. The Vita Chamber (Suchong) - Control Room, on the desk to the left of the entrance.

*100. Mind Control Test (Suchong) - Control Room, on the table beneath the clippings and photos.

*101. Baby Stratus (Suchong) - Control Room, on the table beneath the clippings and photos.

Olympus Heights -- Apollo Square (12 Total)

102. Mozart of Genetics (Suchong) - Olympus Heights, in the Bistro Square snack bar.

103. Artist Woman (Sullivan) - Culpepper's Apartment, on the corner table just inside the main room.

104. Fontaine's Human Jukebox (Suchong) - Suchong's Apartment, on the floor in the southernmost room.

105. Mind Control Antidote (Suchong) - Suchong's Apartment, on his desk next to the tonic

106. Fontaine's Breakup (Paparrazi) - Mercury Suites, on the upper walkway near the U-Invent machine.

107. Sad Saps (Frank Fontaine) - Fontaine's Apartment, on the coffee table near his collection of cigars.

108. What's Happening Here? (Diane McClintock) - Apollo Square, on the ground near the Circus of Values machine.

109. Atlas Lives (Diane McClintock) - Apollo Square, near the Gatherer's Garden machine.

110. Protection Board (Suchong) - Artemis Suites, on the floor of Suchong's office in the clinic.

111. Meeting Atlas (Diane McClintock) - Hestia Chambers, just inside the entrance on the right.

112. The Longest Con (Frank Fontaine) - Atlas' Headquarters, right on the desk next to the tonic.

113. Today's Raid (Diane McCormick) - Atlas' Headquarters, search the corpse near the safe in the corner.

Point Prometheus -- Proving Grounds (9 Total)

114. Changing Employers (Suchong) - Main Hall, melt the ice to enter the closet upstairs and search the trash can.

115. Why Just Girls? (Tenenbaum) - Atrium Balcony, on the desk in the second floor of the orphanage.

116. Extra Munitions (Suchong) - Plasmid Prototyping, on the ground next to the RPG Turret.

117. Marketing Gold (Andrew Ryan) - Test Subject Storage, on a machine on the right-hand side of the room near the cascading water.

118. Missing Boots (Suchong) - Candidate Conversion area, on a desk in the rear of the room.

119. Protector Smell (Suchong) - Suit Assembly, on the machinery in the second floor southwest room.

120. Protecting Little Ones (Suchong) - Suit Assembly, on a desk in the southeast room upstairs.

121. Mistakes (Andrew Ryan) - Suit Assembly, near the Gene Bank machine.

122. Cheap Son of a Bitch (Suchong) - Storage, on a desk in the small storage area of Suit Assembly.

The five messages marked with a * are in areas you can't return to once you leave them, so be sure to pick those up the first time!

Note that the game seems to think message # 59 -- First Encounter (Andrew Ryan) -- is in the Neptune's Bounty/Smuggler's Hideout area even though you actually find it in the Farmer's Market.

About the 'good' ending and the 'evil' ending... If I harvested the sisters up until killing Ryan, and have been rescuing them since, which ending will I get?

if you harvest even one Little Sister, you will get the bad ending.

not attack Cohen at Fort Frolic. I just figured I was better off lobbing something at him from afar than approaching him because I assumed he would just attack me when I got close.

You get an achievement if you save them all. There's no achievement associated with the bad ending.

I saved all but one little sister the first time through and still got the "good" ending