To end life-threatening seizures, musician Tommy Dabrowski has an operation that severs the membrane which connects the two sides of his brain. The operation isolates certain brain activity, and when Tommy witnesses a murder, the part of his brain which can identify the killer no longer has access to language. Brain researcher Claire Austen and Tommy race against time to figure out what he knows before the killer comes for them.

First published in hardcover (photo above) by Bantam-Doubleday-Dell. That edition was a library bestseller.

Today, it’s available as e-book and paperback with all the usual suspects.

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