Harlan Coben's Final Twist

When police find a couple murdered in their home, the investigation leads to social media. Detectives discover a bizarre cyberbullying conflict with a neighboring family and the possible covert involvement of a CIA agent driven by personal vengeance.

When Anna Mae, a wildly successful businesswoman, is found stabbed in her untouched home, detectives face a tangle of suspects and shifting motives. Each lead - casinos, hidden debts and even a fugitive linked to her family - seems to crack the case, until new questions upend everything once again.

Everyone loved Nancy, living in wine country, but when she vanishes from her property while hosting a wedding, dozens of workers and guests are all suspects. But it will take months of painstaking detective work, and new technology called "geo fencing," to finally find the elusive culprit.

Joy Hibbs' husband and two children are devastated when they learn she died following a fire; they would later discover that the fire had not been the cause of her death -- police instead found Hibbs had been stabbed multiple times.

At dawn, Melissa Oxley wakes up for work and finds herself in a nightmare -- her husband has been shot in the head while sleeping beside her.