I can't for the life of me remember the name of a TV series. I saw commercials for it around the time of Penny Dreadful in April 2015 while staying in Cuba.
The first episode starts with friends travelling together in either London or Amsterdam or Paris or something. One friend goes missing and then shows up after having no recollection of where he's been. The police think he's part of a terrorist attack or something. I remember it had point of view filming on a camcorder and he met up with this woman who 'changed' him. I don't know if it was a vampire or werewolf.