From the page: "The CW's summer slate officially kicks off on Tuesday, July 16 with two all-new half hour shows, including the return of the hit improv comedy series "Whose Line is it Anyway?" and the new dating competition "Perfect Score." Premiere night will feature back-to-back original episodes of "Whose Line is it Anyway?" (8:00-9:00p.m. ET) and "Perfect Score" (9:00-10:00p.m. ET). Starting the next Tuesday, original episodes of "Whose Line" will air from 8:00-8:30p.m. ET (with encores at 8:30p.m.), and "Perfect Score" original telecasts will air at 9:00-9:30p.m. ET (with encores at 9:30p.m. ET).
Hosted by comedian Aisha Tyler, "Whose Line" will also feature the return of cast members Ryan Stiles, Wayne Brady and Colin Mochrie, who along with a special guest each episode, must put their comedic skills to the test through a series of spontaneous improv games,prompted only by random ideas supplied by the studio audience. Based on the wildly successful U.K. format, which also spawned a previous incarnation in the US that ran for eight seasons on ABC, "Whose Line is it Anyway?" is executive produced by Dan Patterson, Mark Leveson, Jimmy Mulville, Ryan Stiles and Wayne Brady. Co-created by Dan Patterson and Mark Leveson, the show arrives from Angst Productions and Hat Trick Productions."