Russian agent pursuing Jim Turner for hidden documents and alive capture. Armed with a gun, he searches Turner's boat, kidnaps him from his ransacked houseboat, and attempts to transport him via seaplane before being arrested.
Peggy becomes part of the group resisting Lazlov's operation.
Peggy joins the rescue effort after the children learn that the houseboat owner is being held on the island by the Russian agents led by Lazlov.
John directly opposes Lazlov's abduction and escape plan.
Lazlov is armed during the pursuit of the houseboat owner, while John later confronts Lazlov on the island with a pistol during the rescue attempt.
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