Tuesday's TV highlights: 'Kevin (Probably) Saves the World' on ABC
Knight Squad A rambunctious princess and a mischievous drifter create fake identities to attend knight school in this new fantasy adventure. Owen Joyner, Lilimar and Kelly Perine star. 7:30 p.m. Nickelodeon
Frontline The new two-part episode “Bitter Rivals: Iran and Saudi Arabia” begins...