Focal Archive Producers Janet McBride and Lawrence Breen take over National Geographic Channel in the USA on Monday night.

The hugely popular DRAIN THE OCEANS returns to the USA next Monday night, August 2 for a fourth season with three back to back episodes on the National Geographic Channel.

First up at 8pm eastern is "The Wild West", investigating a 19th Century Steamboat wreck and General Custer's defeat at The Battle of Little Big Horn. https://player.vimeo.com/video/579765667

"Black Swan" tells the story of an international treasure hunt at 9 pm eastern, and at 10pm eastern time "Arctic Wars" explores a Cold War US base hidden in the Greenland ice cap and the toxic legacy of a sunken Soviet. https://player.vimeo.com/video/579795441

UK viewers will need to wait a little longer to catch this new series but previous episodes are currently being broadcast on Channel 5 and can be found on catch up.