With a new challenge in the crosshairs, Alexis travels to America to improve his aim in the shooting range before a showdown with a champion marksman. Looking for a surefire way to ensure a victory, Alexis calls on a co-conspirator in an attempt to outsmart a maths whiz - but can he really pull one over on a University of Oxford professor of number theory? Lastly, he attempts to row his way to victory in a one-on-one kayak race against a five-time European and 11-time Slovakian Champion.

• Alexis Conran