I put John, Mina & Lucy in it and all the results were pretty priceless, but here are just a few:

John Seward / Mina Harker - accidental marriage & poltergeist & taking care of somebody
Lucy Weston / Mina Harker - spies/secret agents
John Seward / Mina Harker / Lucy Weston - timeloops
Mina Harker / Lucy Weston / John Seward - falling

Here are a couple of DW ones, though, if you don't feel v inclined to Dracula any more:

Charley Pollard / Lucie Miller - cultural misunderstanding & bottle episode
Clara Oswald / Lucie Miller - boarding school au