After a surprisingly soft start last week, new comic book drama Constantine was not done any favors by the timing of its second episode, which fell on Halloween. On average, the HUT level declines among adults 18-49 last night — the first Friday of the November sweep — were the steepest at the trick-or-treating 8 PM hour, -13%, gradually picking up to -7% at 10 PM. One would argue that genre lovers may be disproportionately stronger affected by the holiday who would catch up in DVR viewing. Still, Constantine‘s Week 2 Live+same day losses are disconcerting. The DC-themed drama drew a 0.9 in 18-49 last night, down -36% from its premiere last Friday and the lowest result for any original program on the Big 4 last night, scripted, unscripted or newsmagazine. Constantine’s lead-in, Grimm (1.1) was down -24% to tie a series low in L+SD.

Despite the big distractions at 8 PM, most programs held up well in the hour and some even went up week-to-week. The gainers included ABC comedy Last Man Standing (1.2), up a tenth from last week, CBS’ The Amazing Race (1.1), also up a tenth, and NBC’s Dateline (1.3), up 18%. ABC’s rookie comedy Cristela (1.0) held steady. The only decline in the hour was posted by Fox’s fading reality series Utopia (0.5), down 27%.

Also surprisingly strong given the family-oriented nature of the program and the Halloween holiday was ABC’s Shark Tank (2.0), up 11% from last week to match a season high and once again rank as the top program of the night in the demo. At 10 PM, 20/20 (1.4), which devoted a segment to the tragedy on the set of Midnight Rider, was down a tenth from last week and No.2 for the night in 18-49. ABC won the night in the demo by a wide margin.

CBS’ Hawaii Five-0 (1.1) held steady, while Blue Bloods (1.1) was down -15% in the 18-49 demo but was once again a monster in total viewers with 11.2 million. It led CBS to another Friday win in viewers.

The CW’s America’s Top Model (0.3) was flat.