The Obsidian Chamber by Preston and Child returns Aloysius Pendergast to another exciting and intriguing case of blood lust, family complications, and unrequited love. Everyone who is supposed to be dead isn’t. Proctor is sent on a wild goose chase to the Sahara desert. Mrs. Trask’s sister in Albany suddenly becomes ill. Constance is abducted by Diogenes, Aloysius’ younger brother. Aloysius finds himself shackled on a drug runners boat in Maine waters. Total chaos! No one has had time to recover from the Exmouth experience. This novel pits brother against brother in a modern classic Cain and Abel melodrama. Many family secrets are revealed as these two familial foes tussle for the love of Constance Greene, who isn’t whom we think she is. She, too, has her issues with the brothers, especially Diogenes who raped her and fathered her son, now in a secret monastery in India. In addition, she holds the biggest secret and provides the catalyst for Diogenes’ bad behavior. Add to this mix a very sick female assassin and well we have another thriller, a spellbinder from our masterful duo that is difficult to put down.