Last updated 28 March 2020

Strickland -
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TARDIS Data Core

Sip Fel-Fotch Passameer-Day Slitheen was a Slitheen who disguised himself as a policeman named Strickland during the attempted destruction of Earth. Sip Fel-Fotch was sent to get rid of Jackie Tyler but was electrocuted by the actions of the Ninth Doctor, allowing Jackie to escape with Mickey Smith. Though Sip Fel-Fotch attempted to kill Jackie and Mickey in Mickey's home, he was killed by Jackie when she threw a concentrated mixture of acetic acid at him.

Biography from the TARDIS Data Core article, licensed under CC-BY-SA

Notes for Strickland

How to make the Slitheen explode!
The Doctor works out the Slitheen's weakness, will it be in time to save Rose's mother?

Credit: BBC Worldwide