Hopalong Cassidy #20

Outlaw Nellie Blaine stops a Pony Express rider to steal a treasure map, but Hopalong had already intercepted the rider to get the map safely to Twin River. After killing Clay Varney, Blaine pretends to be Varney's niece to lure Hopalong into a trap, not realizing that Varney was the one who had the map in the first place.