After an expensive portrait is stolen from a young woman, Neal tries to uncover the secret behind its origin, and he works with Peter to set up a sting, hoping to catch the cunning and deadly culprit.
Lily sets Robin up with the dad of one of her pupils. Though hesitant at first, Robin agrees and bonds with his son, but when Lily discovers that the little boy has drawn a picture of Robin calling her his `new mummy', she decides things have got too serious and breaks up with his dad.
