When a cyber attack brings Starling City to its knees, Oliver and Felicity are pushed to their limits to contain the destruction. Life gets even more complicated for Felicity when her mother, Donna, stops by for a surprise visit. Meanwhile, Ted Grant... (more) questions Laurel’s motives, and Thea buys an apartment with Malcolm’s “estate” money, which infuriates Oliver.

Brandon Routh, Charlotte Ross, Christina Cox, J.R. Ramirez, Matthew McLellan, Nolan Funk