4x05 Lost and Found
It's a good job Erin was in the dinner when the girl left the note but why they only checked the security tape of them leaving when they couldn't see his face didn't make sense as they could of seen his face when they arrived and the guy in the jewellery shop's girlfriend must of done a real number on him for him to kill himself over an $8,000 ring, Danny not having shoot the guy in the back was lucky