Archer MacClehan has dreams that lead him into dangerous places. In Archer MacClehan & The Girl Who Wouldn't Stop Running - the second Archer MacClehan adventure - he dreams of vultures, a coral snake, a girl named Opal and Running Woman - Sara Cafferty. Sara once fought a grizzly for Archer, but they haven't spoken since the end of the Great Bear Adventure. They've thought about each, though - very often. The dream leads Archer and his partners in adventure, Tom Sevlakovs and Jessie Turnbull, to the Uncompagre Plateau of western Colorado, where 13-year-old Opal Skladany has been kidnapped. Opal's divorced parents are worth a few million each and someone wants a million from each of them - 59 pounds of money according to Sara - to return their daughter unharmed. Sara is already on the Uncompagre, a coincidence she can't explain to anyone - not even herself. Watching over all is Five Bears, Archer's long-dead grandfather. He advises Archer that to catch Running Woman, he must stop running. There's a snake in the grass - very pretty and very poisonous - helping the kidnappers. In the end, it's a foot race across the desert as Sara strives to beat the snake to the girl who wouldn't stop running.