Detectives are hunting arsonists following a spate of attacks on vehicles in the Dinas Powys and Wenvoe areas.
Four vehicles were set alight deliberately at sometime between 1.50am and 2.10am last Saturday morning (21st November).
Two of the targeted vehicles were on Stacey Road in Dinas Powys and a third was on nearby Cross Common Road.
A fourth vehicle fire was started deliberately on St Andrews Road in Wenvoe.
Police said one of the vehicles in Dinas Powys had belonged to a woman who died just two days earlier.
Detective Sergeant Dave Nugent from South Wales Police said: "Being a victim of car crime at any time is upsetting, costly and an inconvenience."
"But to happen so close to Christmas, particularly for the gentleman who is still grieving the loss of his wife, is particularly devastating."
"This is very unusual for the area, and we are appealing for anyone with information to please come forward."
Anyone with information about the arson attacks should contact South Wales Police on 101 or use the live webchat, quoting reference no. 2400420523.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.

Post Office Seeks New Operator in Dinas Powys as Village Faces Loss of Its Last Branch
Gardening team praised after helping police clear fallen tree near St Brides Major
Specsavers calls on children in Barry to design Wales Deaf Rugby World Cup shirts
Whitmore High Named One of UK’s Best Workplaces for Development
Steel Signing Marks Major Milestone in St Richard Gwyn School Redevelopment
Two Rescues in Record Heat as Volunteer Teams Respond to Afternoon Emergencies
Police find evidence of a large-scale cannabis cultivation at Riverside Place property fire
Network Rail confirm closure of Brookside level crossing in Dinas Powys
Police given powers to ask people to leave Comeston Lakes Country Park
Planned children’s role play centre could be given the go-ahead by Vale Council
Marie Curie Garden Fayre deemed huge success
Council seeks views on Future of Colcot Sports Centre and Buttrills Playing Fields
First Minister quizzed on further devolution, budget decisions, and misinformation in FMQs
Extreme heat leads to changes to services and closures
Severe Heat Warning Set to Disrupt Rail Travel Across South Wales This Week
Communities asked to support older people across Wales during severe heat warning
Caribbean Community Wales Brings Wales‑Wide Launch to Barry This Weekend
Community Award winner calls for sanitary bins in men’s toilets after living with prostate‑cancer‑related incontinence
Cardiff Airport Backs Holiday Safety Campaign Honouring Rhoose Teenager Tom Channon