Obviously godmother Emily is there, but also Jack’s new business partners Kenny and Nate Ryan. They didn’t seem interested in baby, but rather on one of the guests, Matt Duncan. Matt was an old friend of Jack’s dad and is crashing the party. He’s the man who shot Joe Ryan dead with Carl Porter’s gun. Matt lets Jack know that the Ryan brothers are bad news, but doesn’t tell him why.
Moments later, Charlotte screams that someone has been hurt outside. It’s Matt. Declan found him beaten and bloody. Matt is able to let Jack know that he killed Joe Ryan. Later, Kenny and Nate let Jack know they found his dad’s address book. Inside the book, Matt Duncan’s name and East Hamptons address are crossed out. Jack strips away some floor panels inside his boat to find the gun used to kill Joe Ryan.