Life appears perfect for super-mum Juliet and self-made businesswoman Lorna. But when a scandal threatens their daughters Grace and Allegra, they realise that nothing is as it seems.

Juliet's night-time secret forces her into a dangerous lie; Lorna confronts the past she's hiding from Grace; the girls ramp up the app with shocking results; Gigi hosts an event that takes a dark turn when the police show up.

The mothers worry about Iris leaving and their daughters keeping secrets; Grace and Allegra try to stay calm at school; Grace lies to Lorna about the app; Allegra pays K Rizz a visit and makes a secret deal.

Lorna fights to get Grace back into school, while the two girls panic and try to cover their tracks; the parents have a showdown at Gigi's wild party - and tragedy strikes.

Juliet faces major marriage decisions; Lorna reveals the truth about her past; the town gather to mourn a loss; Grace and Allegra have a showdown.

The net closes in on Grace and Allegra; Juliet and Lorna make a shocking discovery; Gigi's secret is blown; at Frances's party, the terrible truth is finally revealed.