Complex sentence: The next day, the wilderness-wise Latimer rigs a crude booby trap that kills Jan. With Katy nearing exhaustion, Latimer contrives to double back, and when they find Jan's dead body, realizes that the plane has been left unguarded.
Split into simpler sentences: The next day, the wilderness-wise Latimer rigs a crude booby trap that kills Jan. With Katy nearing exhaustion, Latimer contrives to double back to the plane. Finding Jan's dead body, Latimer realizes that the plane has been left unguarded.