The award-winning RTÉ drama series 'The Clinic' returns to RTÉ One on Sunday night.

As the seventh series opens, Dan (Dominic Mafham) has been released by the Gardaí after being questioned about the death of Niall Boylan.

Read an interview with 'The Clinic' star Amy Huberman.

But Niall Boylan's brother is convinced that the doctor is guilty and is out for revenge.

There are also two new arrivals at Lorcan's (Mark Dymond) home, while Daisy (Amy Huberman) comes off second best in a power struggle.

The new series of 'The Clinic' begins on RTÉ One on Sunday, 27 September at 9.30pm.