Live Fast and Prosper

A mining colony contacts Voyager to complain that Janeway and Tuvok never delivered the dilithium they promised in exchange for a cargo of bolomite. The real crew has never met the miners. The trail leads to a trio of impostors led by a woman named Dala, who earlier gathered information about Voyager by posing as a nun and her companion during a trade with Neelix and Paris aboard the Delta Flyer. After the swindlers strike again, Janeway gives chase and captures the fake captain. Dala escapes from the brig, steals the Delta Flyer and rejoins her accomplices at their hidden store of stolen goods. What she does not realise is that the Doctor, using his mobile emitter, has already infiltrated the gang in disguise. He overpowers the thieves and signals Voyager, and Tuvok takes them into custody. The stolen property is returned to the miners and to vessels from several other worlds.