Brandon McKnight, Danielle Panabaker in The Flash Photo - Bettina Strauss/The CWThis is what's happening on Tuesday, June 29, in the world television. All times are Eastern.AdvertisementTop pickThe Flash (8 p.m. CW): The final season of The Flash (now without Cisco) is fast approaching. There are only four episodes remaining. After tonight, there will be three more. It doesn't seem like the show is wasting time.There is a lot to do there! Team Flash and Central City are under attack by an army made up of Godspeeds. It seems that they're doing a great job. Barry and Iris have to once more put their personal lives on hold because of this heroism thing. Killer Frost is reunited with Chillblaine (guest-star John Cor), who is a new villain released from prison and who may not be a villain but is going to have a lot of fun with Frost, we think. Keep watching for Scott Von Doviaks' recap.Regular coverageWild cardThe Legend Of The Underground (HBO 9:15 p.m.). Nneka Onuorah & Giselle Baileys documentary focuses on the fight against discrimination in Nigeria today through the eyes of several charismatic, non-conformist youth who are determined to live loud.