Passengers report seeing ghosts in Boston's Red Line subway trains. Management consultant Harry West is hired by the MBTA, operator of the Red Line, to investigate. His project turns personal when his ex-wife Alexandra Ben-Tov seems to meet their beloved daughter on the Red Line-- a girl who looks like the teenager she might have become if she had lived. Are the Red Line visitors ghosts or hallucinations? Either way, after Harry's team discovers the source of the visitations, the MBTA declares it will bring them to an end. Alexandra has a brilliant idea: Build a Visitation Room that replicates the features of Red Line train cars so that people can continue to meet their loved ones. But not everyone approves. The Archbishop of Boston wants to ban Visitation Rooms. And a gangster who frets that his victims might come back from the dead warns Harry and Alexandra: Cancel opening day for the Visitation Room, or else.