Season 4

Cathy is confident that she'll finally be able to oust her manipulative business partner and ex-lover, Dan. But her plan backfires when she discovers that her late father bequeathed his stake in the clinic to his secret partner of five years, Dr. Julia Brady.

Aine finds it increasingly difficult to cope with her son Tommy and reacts in a shocking and distressing way. Meanwhile, Cathy deliberately keeps Julia waiting in reception for their meeting. This backfires on Cathy when Dan invites Julia to dinner and sweet-talks her into taking a more permanent position in the Clinic.

The clinic's new nurse, Liam Smith, has a disastrous first day - and worst of all, he gets Dan's back up when he talks one of his patients out of getting rhinoplasty.

Keelin calls off her wedding to Ronan after an argument, while Cathy and Julia clash over Julia's bedside manner. Sinead is diagnosed with endometriosis and Dan collapses after a squash game.

Dan is devastated to discover he has a life-threatening and that the only operation that can cure him may also end his career. He tries to confide his problems to Cathy, but she tells him there is just too much water under the bridge now for them to be friends. Meanwhile, Keelin, with the help of her father, decides to follow Ronan to New York to give their relationship a second chance.

Clodagh makes the decision to reveal her true identity to her birth mother Carol. What Clodagh hasn't taken into account is whether or not the news will be well received.

Patrick refuses to take an agitated Conor for a session after Conor is rude and insults Bernie. Clodagh has had enough with her acupuncture patients and tells Julia she would like to concentrate on her general practice. Daisy is clearly uncomfortable around Jack and calls him a creep under her breath. Cathy is puzzled by the way Dan is acting and agrees to meet him for lunch. Liam teaches his son, Ian, a lesson after he had a few beers and fell over drunk. Ann Marie teases Jack about Clodagh fancying him but Jack tells her she has nothing to worry about.

Daisy thinks she may have been a cause of Conor's break up with his girlfriend, Siobhann, as well as his accident, after Siobhann warns Daisy to stay away from him. Cara tells Daisy that she didn't give Conor the wrong signals. Patrick reassures Daisy she's not to blame for what happened with Conor and needs to talk to him. Daisy talks to Conor and is relieved his self harming had nothing to do with her.

Jack creates a scene in the clinic after finding out that Daisy has accused him of sexual harassment.