The Deadly Experiments of Dr.Eeek by R. L. Stine
Choose from over 20 scary endings! Top secret and dangerous. That's what your mum, a scientist, calls the research she's doing at Dr Eeek's laboratories. Then one day, you get lost in the labs. You're dying to know what's going on there. But then you become a human guinea pig in Dr Eeek's deadly experiments! If you choose one lab, you get trapped in the Canine Maze. If you choose another, you find yourself being experimented on - by a chimpanzee in a white coat! The choice is yours in this scary Goosebumps adventure that's packed with over 20 spooky endings!