The premiere of Zero Hour (1.3/4) on Valentine’s Day saw the full-time return of Anthony Edwards to primetime more than a decade after he left ER. Unfortunately for ABC, on a night that traditionally sees lower viewership, the conspiracy drama marked the lowest-rated in-season debut for a scripted show ever on the network. Facing off against American Idol in the 8 PM time slot, Zero Hour was down 41% from the September 27 premiere of Last Resort, a show that is now cancelled, and 38% from the March 15 premiere of Missing. That still pales compared to the January 31 premiere of the now cancelled Do No Harm on NBC which got a 0.9/3) and was the lowest rated in-season premiere ever of any scripted show on the any of the Big Four networks.
Zero Hour wasn’t the only show having a rough night. In its second week of its fourth season and also head-to-head with Idol on Fox, NBC’s Community (1.1/4) fell 42% from its season debut last week to hit a series low. ABC’s Grey’s Anatomy (2.7/7) didn’t have to face Idol, but it was down 13% from last week to also hit a series low. In its second show of the Girls Only Hollywood Week, Idol (3.6/11) itself was also down. The competition series slid 12% from last week’s Guys Only Hollywood Week Part 2 show. Following Idol, a new Glee (1.7/5) took a bigger hit, falling 23% its February 7 show.