On her first day back from maternity leave, pediatrician Maryam feels ill-prepared as she's thrust back onto the frontlines. Meanwhile, surgeon Catherine sets her sights on a promotion, and medic Helen's marital problems play out at work.
Things start to look up for Catherine when Lars flies in from Sweden to be a father to Elis-but he also brings his judgmental wife, Brigitta. Maryam fights to control her anxiety on the job, and Helen's sister Debbie reenters her life.
Maryam and Raz contemplate adopting another child, but concerns arise about Maryam's mental health. A routine gallbladder operation on a pregnant woman takes a critical turn for Catherine. Guy's alcohol problem becomes obvious.
With Lars taking care of Elis for the weekend, Catherine goes for a 'ladies night' out, but when an emergency occurs, she faces the biggest challenge of her surgical life. Meanwhile, Helen confides in Jack after a grueling nightshift.
The pressures of single motherhood weigh on Catherine as she competes with Jack for a prized position at the hospital. A premature labor leads Maryam to confront her truth, and Helen faces a huge dilemma after a shocking discovery.
As Maryam and Catherine participate in the investigation meeting, they do all they can to support Helen as she deals with the fallout of Guy's actions. In the end, all three women make big decisions that will impact their futures.
Lara Pulver
Catherine Macdiarmid
Parminder Nagra
Maryam Afridi
Lisa McGrillis
Helen Cavendish
Haydn Gwynne
Anne Macdiarmid
Matilda Ziegler
Becky Hillford