The second night of Discovery’s Shark Week features competition between male and female great white sharks, Jaws taking on Mega Croc and first-hand accounts of shark attacks. Shark Week airs at 8 p.m.

Dr. Lee helps a firefighter with bumps on his torso on the next episode of “Dr. Pimple Popper: Breaking Out.” “Dr. Pimple Popper: Breaking Out,” season one, episode 14, airs at 9 p.m. Monday, July 21, ...