Let creepy puppets teach you about creepier ghosts in the new Martha Is Dead trailer

There were already untold horrors in World War 2, but I suppose there's always room for one more. First-person psychological horror adventure Martha Is Dead is set in Tuscany in 1944, where the war is raging and a woman is found drowned in a lake. Her twin sister is left to deal with the aftermath and find out why her sister was killed.