I liked it. It definitely held my interest because of the quirky, complex characters, and the author's writing style is easy and informal. It is basically a psychological mystery. The plot revolves around a family's conflicts when a mentally ill family member continually goes missing.
The author is an interesting fellow who has written many bestsellers, including The Blackboard Jungle, as well as the screenplay for Alfred Hitchcock's The Birds. He has also written more than fifty detective thrillers under the pseudonym Ed McBain.