The only clue is a coded message on the patient’s computer. When his patient Youssef is found dead, either by suicide or murder, Zack becomes entangled with Youssef’s widow Jamilah in her effort to solve the mystery of her husband’s death. But nothing in Zack's world is as it appears as he swings between concern for Jamilah's safety and suspicion that she is responsible for Youssef's death and is part of the terrorist plot that he suspects.

Can he trust anyone in his struggle to survive and to hang onto the last remnants of his sanity? Can you guess who murdered his patient and what drove Zack mad? Share his hallucinations and terror through his eyes and try to unravel the mystery.

If you enjoyed the twists in The Silent Patient by Alex Michaelides or the big reveal at the conclusion of The Sixth Sense, you’ll delight in the diabolical twists that will tease and challenge you in Shared Madness.

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ThriftBooks is a fully independent seller of used books, having sold more than 160 million used and new books since we started in 2003. Each quality used book is sorted, graded, shelved and shipped by hand by our team of dedicated employees in our seven warehouses across the US. We have the best selection of books, in the right condition and format, at everyday low prices. We also have a dedicated, US-based Customer Service team, ranked in the top three by Newsweek for Best Customer Service in 2018 and 2019, so you can shop with confidence. We support and invest in our employees, appreciate and value our customers, and truly believe in the power of the written word to educate, energize, and engage readers of all ages and interests.

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