Eliza Scarlett uses the pseudonym Alice Morgan when she goes undercover. Alice Morgan Wright (1881-1975) was an American sculptor and suffragist. While studying art in Europe (c.1909), she involved herself in both the British and French suffrage movements.
Women's suffrage in the United Kingdom became a national movement to fight for women's right to vote in 1872, and finally succeeded through laws in 1918 and 1928.
To dragoon is to coerce (someone) into doing something, or to force by oppressive measures.
Eliza Scarlett uses the pseudonym Alice Morgan. While this is part of a famous suffragette's name, it is also the name of Ruth Wilson's character's name in Luther
This episode features Eliza's very first case working for Scotland Yard.