Classic ghost stories

Do you believe in ghosts?

Not monsters, not floating objects or unexplained coincidences, but an actual presence - a flicker in the corner of the eye, a shadow in a darkened hallway, a hand pressed against the window, or a figure at the end of the bed. Sometimes they are a malevolent warning, or they come seeking revenge, or as a horrible reminder of past misdeeds. But ghosts could visit on the brightest summer's day, on a lonely stretch of beach, making their presence felt just when you least expect it