The TWiP legends solve the case of Surfer Sans Septum, and discuss how two symbiotic bacteria in the tsetse fly might allow colonization with Trypanosoma brucei.

The doctors of awesome solve the case of the Woman Who Visited Lebanon, and reveal that immunoglobulins protect the olfactory organ of trout against infection with the Ich parasite.

Justin joins the TWiP team to solve the case of the Gentleman with B cell Lymphoma, and consider the finding of Dracunculus species in river otters from Arkansas.