Cousins is the third volume of the Tex Med trilogy. The medical student John McFarland was the primary focus of the first two volumes. Cousins, however, concentrates mostly on Johns cousin, Ted Townley, and his adventures as a deputy sheriff in his hometown of Los Indios, Texas. Follow him and others, including his three Texas Ranger buddies, as they fight Mexican bandits, drug smugglers, a corrupt cattle baron, and the resurgence of the new Ku Klux Klan. Also follow Annes efforts to smooth out her boyfriend Teds rough edges so that their future would be similar to Johns with his girlfriend, Heather. Adventures, romances, moral struggles, and lots of medicine all come together in this historical novel set near the Rio Grande during the onset of World War One.