Spoiler alert! Find out what happens in X-Men: Apocalypse after the credits roll

When it comes to the Marvel Comics universe, the savviest fans know to stay in their seats through the credits in case there is a 'button' or secret scene.

And there is good reason to stick around for the conclusion of Bryan Singer's X-Men: Apocalypse, which finally hits US theaters Friday.

According to Just Jared, the post-credits scene involves the rescue of Hugh Jackman's Logan/Wolverine from scientist William Stryker's Alkali Lake facility.

Spoiler alerts ahead!

A new villain revealed! There is good reason to stick around for the conclusion of Bryan Singer's X-Men: Apocalypse, which finally hits US theaters Friday

A new villain revealed! There is good reason to stick around for the conclusion of Bryan Singer's X-Men: Apocalypse, which finally hits US theaters Friday

Blood vials for Mister Sinister? According to Just Jared, the post-credits scene involves the aftermath of Wolverine's rescue from scientist William Stryker's Alkali Lake facility

Blood vials for Mister Sinister? According to Just Jared, the post-credits scene involves the aftermath of Wolverine's rescue from scientist William Stryker's Alkali Lake facility

Following Wolverine's killing spree, a mysterious man sent by Nathaniel Essex/Mister Sinister puts a vial of blood marked 'Weapon X' inside a briefcase with other vials marked 'ESSEX CORP' at the facility.

The 3D superhero flick has managed to amass $115.4M at the box office, despite a dismal 47 percent approval rating (out of 194 reviews) on Rotten Tomatoes.

X-Men: Apocalypse features a large ensemble cast including James McAvoy, Michael Fassbender, Jennifer Lawrence, Oscar Isaac, and Olivia Munn.

Bad reviews: The 3D superhero flick has managed to amass $115.4M at the box office, despite a dismal 47 percent approval rating (out of 194 reviews) on Rotten Tomatoes

Bad reviews: The 3D superhero flick has managed to amass $115.4M at the box office, despite a dismal 47 percent approval rating (out of 194 reviews) on Rotten Tomatoes

'It's all of us against a god': X-Men: Apocalypse features a large ensemble cast including James McAvoy, Michael Fassbender, Jennifer Lawrence, Oscar Isaac, and Olivia Munn

'It's all of us against a god': X-Men: Apocalypse features a large ensemble cast including James McAvoy, Michael Fassbender, Jennifer Lawrence, Oscar Isaac, and Olivia Munn

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