Aliens And Deadly Weapons: From gunpowder to missiles, were these lethal weapons the product of human innovation, or were they created with help from another, otherworldly source?

Aliens And Lost Worlds: Experts search for proof of alien visitors in the ruins of lost civilisations. Could Mayan carvings reveal a city once ruled by otherworldly beings? (S3, ep 8)

Aliens, Plagues And Epidemics: Experts investigate reports of strange bronze flying ships spotted during the Black Death. Could aliens have brought deadly disease to Earth? (S3, ep 7)

Curse of Kalina: Jimmy and James come face-to-face with the 12-foot gator that has stalked them for weeks, while Jay questions if the Salina job is cursed. (S3, ep 10)

Crash & Burn: The threat of a monstrous alligator pushes Jimmy to his wits' end, and there are disastrous consequences when the heli-loggers overload their chopper. (S3, ep 9)

Assault by Air: The Ax Men's lives are on the line as a weak cable at Browning threatens to kill half the crew and a frightening 'log-alanche' endangers the only greenhorn left at Rygaard.

Chopping Block: Several loggers face the axe including a greenhorn who as gone AWOL. Over in the swamps of Louisiana, Shelby takes on a risky mission in search of a sunken raft of logs.

Showdown: Tempers flare as the logging season hits the rails. One of the greenhorns is sent packing, Melvin and the crew finally have it out and Jimmy and Joe Collins square up. (S3, ep 6)

Surviving the Swarm: Melvin's enthusiasm winds up putting his crew in danger, Jay collapses on the job, and while Jimmy's in the swamp, an alligator gets too close for comfort. (S3, ep 5)

Boiling Point: A careless mistake at Browning threatens to take out DJ and Cody, while, down south, it looks as though Jimmy's first dive may be his last. (S3, ep 4)