Now Andy (Charlize Theron) is back in “The Old Guard 2,” still leading her team of fellow immortal fighters: Nicky and Joe (Luca Marinelli and Marwan Kenzari), two warring Crusaders who fell in love; ...

Are you unsure whether you need to watch all Dexter seasons before the upcoming sequel? Here’s what to watch, and what you can skip, before Dexter: Resurrection.