Shadows Of The Tardis

In the heart of London, Mera Tyler-a hardened hunter with a past she'd rather forget-finds herself pulled into a reality far stranger than any she's ever faced. When a blue police box appears out of nowhere, defying everything she knows about the universe, Mera is thrust into the chaotic world of the Doctor. Clashing with her estranged sister Rose and wrestling with the truth of her own destiny, Mera is forced to confront the secrets that could destroy everything she's fought to protect. As the shadows of her past close in, Mera must decide: will she continue to fight alone, or will she join forces with the Doctor to face the darkness that threatens both their worlds?

Supernatural/Doctor Who crossover, Soulmate AU