The classic years of Doctor Who were well known for use of horror tropes, especially during the Phillip Hinchcliffe Era. Seth and Mark return to give their signature blend of knowledge and humor to this Tom Baker classic that is more than just an homage to horror classics like Frankenstein and Re-Animator.

The Brain Of Morbius has The Doctor and Sarah Jane landing against their will on the planet Karn. After finding shelter in Dr. Solon’s castle the pair soon realize the sinister experiments at play. Plus, it marks the first appearance of The Sisterhood of Karn, who would go on to have a long history with Doctor Who for the next several years.

Sources: The TARDIS Data Core, A Brief History of Time Travel, and Radio Times