When Max reconnects with an old friend, Caroline’s jealousy inspires her to try to make some new friends of her own.

The team faces off against a formidable villain nicknamed The Calculator. Meanwhile, Nyssa makes her move and Roy Harper returns to Star City.

The doctors are questioned following a violent incident inside the hospital that leaves two doctors gravely injured. Neal and Christa make their relationship to the next level after officially disclosing their romantic relationship to HR.

For their first individual challenge, the artists must create realistic disguise makeups for "secret agents".

Mac and Dennis move to the suburbs for cheaper rent but find it hard to adjust.

A woman is followed home and raped outside her building, where several neighbors witness the crime but fail to call for help.

Mike and Louis must identify an anonymous tipster in order to diffuse a damning piece of evidence. Gibbs isn't just after Mike, she's set her sights on Jessica and Harvey as well.

Sam and Dean drop in on Jody Mills, Claire and Alex after receiving a panicked phone call from Claire. She believes the recent murders in town are supernatural and wants the boys’ help. However, Sheriff Mills tells Sam and Dean that Claire has been getting into trouble lately as she’s been attacking normal people and accusing them of being monsters.

Producer Martin Scorsese (Vinyl (2016)); Gillian Jacobs (Love (2016)). Also: The Chainsmokers perform.