Queen of aquatic mysteries Josie is thrilled to do a "fun one" (no murder!) this week, telling Mel all about the Hawkesbury River Monster, a mysterious creature believed to lurk in the depths of the NSW river with sightings dating back thousands of years.

Hate the zesty chit-chat? The mystery starts at 12:43.

As always - LOVE US PLEASE.

Instagram: @allaussiemysteryhour

Twitter: @mystery_hour

Facebook: Search for the All Aussie Mystery Hour group.

Josie on Instagram: @josieroze

Mel on Instagram: @melissamason_