With a nearly empty tank, Kate discovers the wreckage of a Russian sub from Bell’s previous Titanic expedition. Inside she finds more oxygen tanks and the third artifact - a crown. Meanwhile on Topside, Caleb is accused of sabotage and Sue reveals her true allegiances. Caleb learns the truth behind the artifacts and the sinking of Titanic and is forced to make an impossible choice between trusting Sue’s judgment and saving Kate from the ocean’s depths. 

Learn more about your ad choices. Visit podcastchoices.com/adchoices