Watch A Discovery of Witches Episode 1 HD Full Free on SolarMovie. Watch A Discovery of Witches tv series online free. Diana Bishop, historian and witch, accesses Ashmole 782 and knows she must solve its mysteries. She ...Diana Bishop, historian and witch, accesses Ashmole 782 and knows she must solve its mysteries. She is offered help by the enigmatic Matthew Clairmont, but he's a vampire and witches should never trust vampires.