The ending ***spoilers***
How come just because the cops saw Zosh could walk that somehow they seemed to determine that Frankie wasn't the killer?
They say 'Get dressed', and she does, then takes off and throws herself over the railing to her death, and afterwards they just take her away, and Frankie just walks away with Molly. No statement, no questioning by the police, who up to that point had considered him the cheif suspect.