The Troubles

The Westies' fragile deal with the Italians unravels after a reckless kidnapping; Flanagan is released from Bellevue and rejoins Roarke's crew, Keenan is pulled onto an FBI task force, and Bridget receives a dangerous assignment from an IRA contact.

The Houdini

Roarke and the Westies hide the body of a dead Italian mobster and stage crimes to cover up the murder before Gotti retaliates; Polk pressures Keenan to dig into Sweeney's Mafia ties, while Bridget uncovers more of Cahill's plot.

The Starship

Sweeney strikes a deal with Castellano: rob a Colombian disco and Flanagan walks free; Bridget seeks counsel about Cahill, while Keenan investigates the killing of a cop in Boston.

Favours and Funerals

Roarke clashes with Sweeney over selling stolen cocaine, but Sweeney has his own agenda; as he receives a Hibernian Society award, Gotti orders a hit; Bridget learns Cahill's target is someone from her past; Keenan struggles to help his son.

A Right Rose Tree

Sweeney lets Roarke sell cocaine only if he sources it himself, putting him in Gotti's crosshairs as Gotti suspects the Westies are defying Castellano; Bridget helps Cahill secure explosives for their IRA plot; Polk pressures Keenan to wear a wire.