Detectives hunting the killer of two women in a massage parlour believe the murderer stole a CCTV monitor.
The bodies of Annie Eels, aged 55, and Samantha Tapper, 24, were discovered on the floor of premises in Shrewsbury, Shropshire, in July. They had suffered severe head injuries.
Detective Chief Inspector Sheila Thornes, leading the investigation for West Mercia Police, said a small monitor from inside the reception room where the women were murdered had been removed.
She said the device had been in its usual position within the room earlier in the day on July 1 and was functioning normally. Police have released two pictures of a similar monitor - a white Woolworths brand device measuring 15cm square - to the one missing.
Ms Thornes added the killer may have stolen about £300 from the massage parlour, known as Rachael's Health Studio, at 13 Frankwell.
She said: "It's believed a quantity of money is missing from the premises.
"Whilst some money has been recovered from the scene, about £300 is not accounted for."
She urged anyone with information to contact the incident room on 0845 7444 888.