The past comes back to haunt both Oliver and Laurel. Curtis is upset when he discovers that Diggle and Lyla have restarted The Ghost Initiative with Diaz, China White, Kane Wolfman and Carrie Cutter.
Cast: Stephen Amell, David Ramsey, Emily Bett Rickards, Echo Kellum, Rick Gonzalez, Juliana Harkavy, Colton Haynes, Kirk Acevedo, Sea Shimooka, Katie Cassidy, Kathryn Bouchard, Luke Camilleri, Peter Graham-Gaudreau, Liam Hall, Auralee Ivy