Points of the Star
From Tardis Wiki, the free Doctor Who reference
The Points of the Star were five secret names entrusted by John Dee to the Service at its founding. When written on the body of Service agents, these words were intended to lend a great and holy strength.
Lisa-Beth Lachlan secured the Service's attendance to the wedding between Scarlette and the Doctor by threatening to release the names of the Points. (PROSE: The Adventuress of Henrietta Street [+]Loading...["The Adventuress of Henrietta Street (novel)"])