Searches for a man - reportedly seen in the River Severn in Bridgnorth in Shropshire have ended.
Emergency crews were called out to an area near the old Rowing Club at around 5:30pm.
West Midlands Ambulance say no-one was found - and that crews were stood down because there was no daylight left.
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"She tried to take hold of the knife to stop him. He told her not to shout out and scream and get on her knees and beg."
A minute-by-minute witness account of the battle has been found and entries from the diary will be tweeted in real time on the anniversary.
"He was so matted that he barely resembled a dog at first glance. His fur was covered in faeces and it was completely covering his eyes."