"My name is Sarah Grey.
I knew of Harry Price before I became his trusted assistant. He was notorious - London's greatest ghost hunter.
"Working alongside Harry meant dedicating myself to his work, leaving behind my past - and I trusted him.
"I knew of Borley Rectory, too, before I visited it with Harry - supposedly the most haunted house in England.
"I knew there was no such thing as phantoms; the many witnesses must be mad,or lying.
"I knew I could visit Borley Rectory without fear, return without harm.
"These are thine things I thought I knew.
"I now understand the true meaning of terror."