Three scientists wearing airtight protective suits are found dead in a sealed, high-security laboratory. They had been studying an unknown substance brought to Earth by the recently returned Mars probe. Was this substance responsible for their deaths? Was it an accident - or could it be murder? This is a brilliant book from The Outer Reaches series, introducing a world with two species of humans. Written by award-winning author Malcolm Rose and featuring the sleuthing teenagers, detective Troy Goodhart and forensic specialist Lexi Iona Four, this story includes yet more excitingly gory crimes. Perfect for a teenage reader who wants a great book to get stuck into!