Legacies

7 p.m. on @ AE The Necromancer’s (guest star Ben Geurens) next move unleashes more havoc than anyone expected, so the Super Squad quickly bands together in the new episode “Hold on Tight.” Meanwhile, a confrontation with Ethan (Leo Howard) reminds Josie (Kaylee Bryant) why she no longer trusts herself to use magic. Danielle Rose Russell, Aria Shahghasemi, Matthew Davis, Jenny Boyd and Quincy Fouse also star.