Mass murderer Jeremy Bamber is hoping the discovery of new photographic evidence could set him free. It comes ahead of the 40th anniversary of a crime that shook Britain and led to the killer, now 64, being jailed for life after shooting dead five members of his family at their farm. Bamber was convicted after a jury heard how he had used a rifle with a silencer to murder adoptive parents, June and Nevill, both 61, and adoptive sister Sheila Caffell, 26, along with her twin boys Daniel and