Season Twenty-Seven (Mr. Garrison)

Season Twenty-Seven aired during 1990 and was made up of four serials. It featured the Seventh Doctor portrayed by Sylvester McCoy and was the last to feature his companion Ace who departed in the last story.

Overview
The series continued the adventures of the Seventh Doctor and Ace in the TARDIS. It introduced a number of new enemies such as the Skar'uth which are a race of insectoids with a hunger for blood as well as a criminal boss who was partly cybernetic due to his dabbling with aliens known as Terry Hargreaves. The series also reintroduced popular aliens the Ice Warriors who had not been seen since the 1970s story "The Monster of Peladon".

The theme music was altered slightly for this series as was the logo. The theme music introduced a new screeching sound reminiscent of the one accompanying the Howell theme to begin and end episodes, and the logo became completely silver on a background which appeared to be the event horizon of a black hole.