Scratching!

Sam Travers, a PC salesman stays at an old Elizabethan hotel, but cannot sleep due to scratching noises all around his room. He telephones the manager who tells him it is the ghost of Mary Beth. She was walled up inside a room in the seventeenth century for adultery. The manager tells Sam Mary Beth must like him and won't go away until she meets him. Eventually, her ghost appears to him in his room. Sam passes out and wakes the next morning in bed with Mary Beth in her time...the seventeenth century.
Sam Travers now finds he can travel from her time to his,but this time travelling can't be controlled by himself. His life therefore becomes very confusing...