How Yvette Nicole Brown`s `Avengers: Endgame` appearance was even a surprise to her
(CNN.com Entertainment)

Exactly how secretive is Marvel Studios when guarding the plot details of their superhero films, even from name actors making cameos? CNN put the question to Yvette Nicole Brown, who revealed that she wasn`t even sure which `Avengers` film she`d ultimately end up appearing in -- and didn`t find out until after she bought a ticket.