The Blacklighters discover opalised sea creatures in an ancient seabed. The Cheals close in on their biggest opal haul ever, but all is not as it seems.

The Opal Whisperers' partnership with veteran miner Uwe ends abruptly. The Misfits finally hit old timers' workings at the bottom of their open cut mine.

The broke Bushmen are forced to trade opal to get a shaft drilled on a new claim. The Digi Diggers get lost exploring a terrifying abandoned mine.

Lisa jeopardizes a sale with a bespoke jeweller designer. Rod goes toe to toe with ratters who stole opal and equipment from their mine.

A vicious storm threatens to end the Misfits season early. Plus, Issy attempts a new black-lighting technique to impress Opal Joe.

The Misfits discover they're losing precious opal, so they attempt a dangerous night dig with an excavator and ultraviolet blacklight