An off-duty cop was stabbed by a killer who had brutally murdered a mum and her young son.
PC Steven Denniss was walking his dogs Copper and Zorro when he was knifed by murderer Daniel Boulton in his leg.
The attack happened after he confronted Boulton at the entrance to Hubbard’s Hills beauty spot in Louth, Lincolnshire, only hours after he had killed his ex-partner Bethany Vincent, 26, and her son Darren Henson, nine.