Brian Murray, 46, vanished from the Nushagak River near Dillingham, Alaska on August 27, 2011. An experienced outdoorsman and assistant hunting guide, he was last seen leaving a beach near camp in a small skiff while transporting a friend and a pilot to a gravel bar runway. After dropping them off he was returning to camp alone but never arrived at the village downriver.

Rescuers found his skiff adrift shortly afterward with the ignition key in the on position and the throttle open, suggesting a sudden departure from the boat. Extensive searches of the river and surrounding wilderness turned up no trace of Brian. Born in Elim, Alaska, he had worked as a crew boss and saw man and later as a guide; friends and family described him as a sober outdoorsman who loved hunting and fishing.

What did anyone see on the Nushagak River that day who hasn’t spoken to authorities?