Episode 1—To Catch a Stalker

1/2 Zara meets Isobel and Jen as they face terrifying real-world stalkers.

Episode 2—To Catch a Stalker

2/2 Laura and Liv fight to escape stalking by an ex and an online predator.

1/4 Zara McDermott follows the money, the crime and the big players on the party island.

2/4 Zara gets a closer look at how social media is changing Ibiza 鈥� and its crime.

3/4 Zara comes face to face with the criminal economy that keeps the drugs flowing in Ibiza.

4/4 Zara gets tantalisingly close to the top of the drugs network in Ibiza.

Zara is in Idaho, USA, where four student murders sparked a global online obsession.

2/3 Zara McDermott uncovers a world of online grooming. Did Gaia unwittingly stumble into it?

1/3 Zara McDermott explores the mysterious disappearance of 19-year-old Gaia Pope-Sutherland.

3/3 Zara McDermott discovers the final pieces of the mystery surrounding Gaia鈥檚 death.