1968, however, saw changing viewership trends that prompted CBS to expand its last two 15-minute daytime dramas, disrupting long-standing viewing habits. Search for Tomorrow took over the entire 12:30–1/11:30–Noon period, with The Guiding Light returning to its first timeslot, 2:30/1:30, albeit in the now-standard half-hour format, on September 9. This twin bill of expansions also caused the dislocation of The Secret Storm and the beloved Art Linkletter's House Party, as well as the cancellation of the daytime To Tell the Truth.