I Know This Much is True - Wally Lamb

A wonderful and complex novel by Wally Lamb.

"I Know This Much is True" follows the lives of a set of identical twins, one of which is mentally ill. Lamb does an excellent job of examining several issues at once. Mental illness, the politics of mental illness, the love of family, the stress of mental illness on others, family history, and the effects of not knowing where one came from. All these layers are woven into a single, powerful, and complex story.

At 883 pages for the mass market paperback edition, this book will occupy some time, and it's well worth it.