Jemma from Burnley and Ashley from Cardiff head to Mallorca for a no-holds-barred holiday in Magaluf.

A 19-year-old fitness fanatic and an 18-year-old trave to the party resort of Malia for a holiday with friends, unaware that their parents are watching everything that they get up to.

An 18-year-old from Norwich and a 19-year-old from Southend travel to Zante for a holiday with friends, unaware that their parents are watching everything that they get up to.

Mummy's girl Chani and university-bound Max from Kent head off for a week on the party-filled Greek island of Kos.

Two 18-year-old boys with different lives head off to the Greek party island of Zante.

Two 19-year-old homebodies head off to the Greek party town of Kavos.

Londoner Ashleigh and Tom, from Bolton head off to the clubbing capital of Cyprus; Ayia Napa.

Back in the UK, parents and teens talk about their experiences, plus series highlights.

It is buckets of booze, ladyboys, pole-dancers and 'tactical vomiting' for two very different groups of mates on the island of Koh Samui, Thailand's original party destination.

Unsuspecting young people fly over 6,000 miles away from home for the holiday of a lifetime in Thailand, little knowing that their parents will be following them and watching their every move. It's a baptism of fire for our kids as they fly long haul to the Thai island of Koh Phangan, famous for its wild full-moon parties.

Unsuspecting young people fly over 6,000 miles away from home for the holiday of a lifetime in Thailand, little knowing that their parents will be following them and watching their every move. Two groups of boys join the 25,000 party goers that head to Koh Phangan's famous Full Moon Party.

Unsuspecting young people fly over 6,000 miles away from home for the holiday of a lifetime in Thailand, little knowing that their parents will be following them and watching their every move. Two very different young people head to the beautiful Thai island of Koh Phi Phi. During the day this tiny island is a peaceful paradise, but at night it is party central, with fire shows and buckets of booze.

Two young people head to the beautiful and hedonistic Thai island of Phuket for what they think is their first ever holiday away from their parents, but what they don't know is that their parents will be there too, spying on the sly and watching everything they get up to.

Billy from Bristol and Agi from Essex head to Koh Samui, home of the Full Moon parties.

A look back at the fourth series, in this episode, the parents and the teens talk about their experiences on the show and what happened after.

Nineteen-year-old Cleo has had a Christian upbringing in Bedford with single mum Charity. Now Cleo's off to uni in Sheffield with her best friend Rose and it seems there are a few secrets she keeps from her strict mum. Namely, boys. Charity's hoping her daughter can stay true to her upbringing when she's away from the family home, so she's spying on Cleo's first week at uni. Eighteen-year-old Joe from Northumberland is also going to Sheffield to study history. Joe is mollycoddled by his mum and dad, who get tears in their eyes just thinking about their first child leaving home. They're convinced he can't even boil an egg without their help, so they want to see for themselves how he really copes on his own.