Devon and Cornwall Police say that a woman who died and her husband, who was seriously injured, at Brixham coast have injuries that suggest they fell from height.
The incident initially sparked mystery when the couple were found around 5.55am on August 11 after the woman was spotted in the water near Brixham Laboratory.
DS John Allenbrook said:
Despite rescue efforts the 49-year-old woman was declared dead at the scene, while her 61-year-old husband was located on rocks nearby with a number of injuries.
He was taken to Derriford Hospital and is now said to be recovering with his family and in a stable condition.
It's thought the pair had been visiting Devon from Huddersfield, with their dog who has since been taken into the care of kennels.
Police added that the dog is not thought to have entered the water, but its behaviour alerted the security guard, leading him to find the couple.
Police are continuing to ask for witnesses and any further information about the incident.