The doctors take a closer look inside their ears to prove how earwax has a really important job to do, and Dr Xand meets a pioneering professor who makes body parts. Meanwhile, over in accident and emergency, one patient has injured her toe and another has swallowed a hair clip...

The doctors prove that we all have invisible ink inside our bodies, and Dr Xand sees head lice removed from someone's hair with a vacuum cleaner. Meanwhile, over in accident and emergency, one patient has banged her head on a telegraph pole and another has a piece of crayon in her ear...