Sam and Tim are dropped by a client, so they court a competitor in a bid for revenge. Guest starring Keegan Michael Key.
The three remaining contestants compete in the advanced science and specialty subject rounds to secure a place in the final and keep alive hopes of securing a $100,000 college fund.
Child Genius US
Paul Shull heads to Rogersville, Tennessee, to help Vietnam veteran Sammy Seay rebuild a gun truck nicknamed the `Proud American'.
The Weapon Hunter
Gary and Eddie's battle with a competitor turns deadly and they set out to settle the score. Hustler Matt partners up with an old friend for an epic payday.
Ragnar and Floki remain at odds in Kattegat, while Rollo makes great efforts in Paris to win over his new bride. Bjorn's survival skills are put to the test in the wilderness, and Ecbert sends Aethelwulf to rescue Kwenthrith from opposing forces in Mercia.