 Everyone in "The Hill" attends a big Irish wedding, as Tommy Caffee tries to avoid a legal trap set up by an ambitious U.S. Attorney, who has promised him immunity if he will testify about Michael's dealing with Freddie.He must also protect his brother from being whacked by Moe Riley, who has been released from prison and is out for revenge.Declan finds his partner may be a dirty cop and must decide where his loyalty lies.