Their next victim, John Kilbride, was killed on 23 November. A huge search was undertaken, with over 700 statements taken, and 500 "missing" posters printed. Eight days after he failed to return home, 2,000 volunteers scoured waste ground and derelict buildings. Hindley hired a vehicle a week after Kilbride went missing, and again on 21 December, apparently to make sure the burial sites at Saddleworth Moor had not been disturbed. In February 1964, she bought a second-hand Austin Traveller, but soon after traded it for a Mini van. Keith Bennett disappeared on 16 June 1964. His stepfather, Jimmy Johnson, became a suspect; in the two years following Bennett's disappearance, Johnson was taken for questioning on four occasions. Detectives searched under the floorboards of the Johnsons' house, and on discovering that the houses in the row were connected, extended the search to the entire street.