1: What this puzzle is (3)
3: Mixed greens and teals, so dad's remodeled (6,5)
9: What's left when you burn the tree (3)
10: Questionable realtor robs preacher (4,7)
11: Sound measure when Bec lied badly (7)
12: Share between two some lethal venom (5)
13: Exciting moment, actor as reviewer (11)
15: Crook skimmed cash register? (3)
16: Crew member is one in operating room (3)
17: Orchestra I'm reorganizing for certain conductor (11)
21: Is next to a total bust (5)
22: Eat or drink after the dollar improves (5,2)
24: 27-across about starting off 1-down world unconditionally (2,3,2,4)
25: Freshen the atmosphere (3)
26: Toff aimed to do himself proud. (11)
27: Mann's 'Death in Venice' Dorothy sent up (3)