Especially in everyday pediatrics, grey is more common a color than either black or white. Field et al. present 100 such "grey" scenarios in which the elements of diagnosis are not straightforward -as they usually aren't in real life. This book is, no doubt, excellent practice for the written portion of the MRCP (UK) part II, but also good reading for pediatric house officers in general. It covers everything from behavioral problems to metabolic diseases; from pediatric cardiology to neonatal neurology. Many cases are supported with b&w pictures, radiographs, EKGs, EEGs and growth charts. The discussions are clear and sound and yet unfulfillingly brief, which perhaps is intentional to leave the reader with room for pursuing more information elsewhere. Unfortunately though, the lack of references does little to aid the reader in this regard. Therefore, information is not the stronghold of this book, as opposed to wisdom, which is clearly written between its lines. It teaches to use common sense generously whenever pieces of a medical puzzle don't seem to fit right, and to consider other possible diagnoses whenever clinical answers appear to come easily served on silver platter. In brief, this is a very good, practical book about a common but generally unexplored subject in pediatrics: the grey cases.