Doug and Abi and their three children travel to the Scottish Highlands for Doug's father Gordie's birthday party. It's soon clear that when it comes to keeping a secret under wraps from the rest of the family, their children are their biggest liability...

• Lionsgate
• BBC Film
• David Tennant
• Rosamund Pike
• Billy Connolly
• Ben Miller
• Amelia Bullmore
• Emilia Jones
• Bobby Smalldridge
• Harriet Turnbull