On Aug. 28, Marvel chief creative officer Kevin Feige received an urgent email regarding Chadwick Boseman, with no further information. Unbeknownst to anyone at the studio, the Black Panther star had been battling colon cancer privately for four-plus years and had taken a sudden turn for the worse. By the time Feige read the message an hour later, Boseman already had died, sending shock waves through Disney and the tight-knit Marvel Cinematic Universe.

A source close to Boseman tells The Hollywood Reporter that the 43-year-old actor, who had become noticeably thin in recent months, was convinced until about a week before his death that he was going to beat cancer and would be able to gain the weight back for a Black Panther sequel that was scheduled to go into production in March. The actor was even set to prepare for the new film beginning in September.

Now, the studio is processing the grief of losing a loved one — an actor beloved and respected on- and offscreen — while having to face the economic realities of forging ahead with a billion-dollar franchise without its titular star. Furthermore, his death will ripple across the Marvel film universe, given that the Black Panther character was poised to appear in other interconnected films, as Boseman already had done in 2016’s Captain America: Civil War, 2018’s Avengers: Infinity War and last year’s all-time top box office grosser, Avengers: Endgame.

Disney sources say the company is processing its grief and that its focus at this stage is to pay tribute to Boseman and not on the making of a Black Panther sequel. Only a handful of non-family members knew that Boseman was sick, including producing partner Logan Coles, longtime agent Michael Greene, trainer Addison Henderson and 42 director Brian Helgeland — with varying degrees of knowledge about the severity of the actor’s condition. No one involved with Black Panther was aware, says a source. It was Boseman’s wish to keep his cancer battle private.

Many are left wondering how Boseman kept his diagnosis under wraps while shooting a film with a colossal budget like the $200 million Black Panther in 2017 (the film opened the following year and went on to earn $1.35 billion worldwide and was nominated for a best picture Oscar). But film finance attorney Schuyler Moore says a Marvel star wouldn’t likely require a medical examination for insurance purposes.

“Big studios don’t often [get] completion bonds,” says Moore. “They are more prevalent in the indie filmmaking world. Sometimes, the big studios will look to insure for a particular actor, but they usually have a particular reason for doing so. Otherwise, studios will just shoulder the risk [of sickness or death].”