that night, lombard finds his gun returned to his room. henry blore catches a glimpse of someone leaving the house but loses the trail. only armstrong is absent from his room. vera, blore, and lombard decide to stay together at all times. in the morning, they signal to the mainland from outside by using a mirror and sunlight, but receive no reply. blore returns to the house for food by himself and is killed by a heavy bear-shaped clock statue that is pushed from vera's window sill, crushing his skull. since neither of them were near the house when the death occurred, vera and lombard conclude that armstrong is the killer.