Three Marvel Comics stories have distinct influences on Infinity War, according to the Russo Brothers.
Secret Avengers references first started popping up in Captain America: Civil War and those elements will continue on to the upcoming Infinity War.
The storyline is hinted at in the new trailer for Infinity War when Ebony Maw is seen torturing Doctor Strange.
In a recent interview, the Russo Brothers discussed the Marvel Comics influences on the epic movie, noting that they took elements from three distinct storylines.