Across: 1 prospect, 5 zombie, 10 Pianola, 11 spectre, 12 alive, 13 harlequin, 15 trick or treat, 19 jack-o-lantern, 24 card table, 26 alarm, 27 oratory, 29 pumpkin, 30 shiver, 31 stop dead
Down: 1 poplar, 2 oxalis, 3 pioneer, 4 cha-cha-cha, 6 overeat, 7 bat, 8 eternity, 9 user, 14 ukes, 16 on-the-spot, 17 ejectors, 18 scar, 20 outcome, 21 road map, 22 cackle, 23 omened, 25 boyo, 28 Ali