Lucky Luke: The Daltons' Amnesia; paperback; Series No. 49

After a failed escape, Joe Dalton suffers a blow to the head and loses his memory.

The Daltons suddenly appear harmless — even friendly — confusing everyone.

Lucky Luke is asked to watch over them while doctors study Joe’s condition.

Joe’s “good” personality clashes with his brothers’ instinct to commit crimes.

Plenty of comic situations as the Daltons struggle between honesty and villainy.

Eventually, Joe regains his memory… and his hatred of Lucky Luke.