Milo Murphy's Law (Disney XD), Monday 8 p.m. - “Going the Extra Milo; The Undergrounders"
Series premiere! This new Disney XD series comes from the team behind the monster hit Phineas & Ferb, and looks to dabble in sci-fi just as much as its predecessor. The series follows the adventures of the great-great-great-great grandson of the originator of Murphy's Law. In the pilot, a new kid in town learns that even a simple trip to school becomes an adventure when he meets Milo Murphy; and Milo discovers an underground city.
Timeless (NBC), Monday, 10 p.m. - “Pilot”
Series premiere! Time travel looks to be all the rage this year, and this could be one of the most interesting new additions. Timeless follows a team of time travelers who pursue the villain Garcia Flynn to the Hindenburg disaster of 1937. The series, from Shawn Ryan (The Shield, Chicago Code), focuses on a professor, a soldier and a scientist teaming up to travel through time to battle a master criminal out to alter human history.
The Flash (The CW), Tuesday, 7 p.m. - “Flashpoint”
Season premiere! After changing the past at the end of last season, Barry is living his dream life and enjoying his retirement as Kid-Flash keeps the city safe in the Flashpoint universe. But, time always has a way of catching up with you (especially when you’re the Flash).
Arrow (The CW), Wednesday, 7 p.m. - “Legacy”
Season premiere! The fifth season kicks off with a deadly new criminal, Tobias Church, threatening Star City. Overwhelmed and with a lack of support, Oliver considers forming a new team of heroes to help defend Star City. In flashbacks, Oliver faces off against the Bratva in Russia.
Frequency (The CW), Wednesday, 8 p.m. - “Pilot”
Series premiere! Based on the film of the same name, this high-concept procedural follows a detective who discovers she's able to communicate with her estranged father who died decades earlier via a ham radio. She then warns him off his untimely death, leading him to survive, but also dramatically changing the present.