King's Ransom: Detective Sam Speedman book 2

Five innocent hostages. Five private investigators. A fiendish ransom game. Has Detective Sam Speedman met his match? A fast and deadly Matthew Reilly thriller. A DARING ABDUCTION The richest man in the world has been kidnapped. Along with four of his children. THE DEADLY CHALLENGE The kidnapper's demand: the five best private detectives in America must come to the missing tech billionaire's penthouse in New York City by noon and engage in a deadly series of riddles and ransoms to find and rescue them. THE FIFTH DETECTIVE Among the five investigators brought to New York is Sam Speedman. Skinny, bespectacled and brilliant, Sam is different to most other detectives. But as the situation escalates and the bodies mount, Sam is going to discover that appearances can be deceiving and that maybe some villains are best left alone...