Amy and Stan thought the prank was harmless. Pretend to be Hollie’s crush online, have a laugh, then come clean - but then Hollie turns up dead.

Now the fake profile they created has taken on a life of its own, targeting new victims online. As guilt turns to fear, Amy begins to search for the truth, uncovering secrets that were meant to stay buried.

Someone is clearly in control of the catfish… but who? And is Amy the killer's next target?

Exploring friendships, obsession, and the dark side of social media, this tense and twisty teen thriller is perfect for fans of Holly Jackson, Karen McManus, and E. Lockhart.

Former journalist Sue Wallman, now a secondary school librarian, is an award-winning author and one of the UK's top teen thriller writers. Her debut featured in the WHSmith/Zoella book club.