Runtime: 46m

Rating: 7.6 / 10

Old pals Dara, Robyn and Saoirse head to a small Donegal town for a school friend's wake, and to make sure a long-held secret stays buried.

Runtime: 47m

Rating: 7.5 / 10

Reeling from the crash, the gang vows to leave Greta and the past well alone, until mysterious red letters and an old notebook pull them right back in.

Runtime: 46m

Rating: 7.6 / 10

As a storm rages towards Knockdara, Saoirse, Dara and Robyn set up camp in the hotel, again. Liam probes deeper into another old friend of Greta's.

Runtime: 49m

Rating: 7.6 / 10

After some stellar sleuthing, the trio's search for answers takes them to a five-star resort in Portugal, where they're not the only ones on a mission.

Runtime: 49m

Rating: 7.5 / 10

Desperate to outrun Booker, the three friends scramble around St Patrick's Day Dublin. After Andrew's bombshell, Liam has a bone to pick with Saoirse.

Runtime: 52m

Rating: 7.7 / 10

Already in a tight spot, a confession ratchets up the tension between Robyn, Saoirse, and Dara. An exasperated Booker gets back on the box's trail.

Runtime: 52m

Rating: 7.4 / 10

Booker, Feeney and the Midwife receive a summons to Derry. At a Belfast police station, risky gambits, surprise reunions and smoke breaks transpire.

Runtime: 57m

Rating: 7.6 / 10

Event: Season Finale

Having come this far, Saoirse, Dara and Robyn know there's no going back. Will they finally uncover the terrifying truth ... and manage to stay alive?