Pursued by a drug ring, she depends on a stranger to survive. US marshal Whitney Johnson's peaceful vacation explodes when drug dealers interrupt her wildlife tour and she overhears information that could destroy their operation. After a daring escape, she washes up on a remote island. Reclusive scientist Theo Roberts didn't expect danger on his doorstep, but he'll help Whitney face it. With killers edging closer, will a route through the Everglades lead to safety--or end their lives?.