Arsonists set a house on fire in the early hours of the morning in March.
The fire was started in the kitchen at 3am on Sunday (February 22) at The Greys in March.
All of the residents were out of the property on the arrival of the fire service.
Four firefighters wearing breathing apparatus used two hose reels, a jet and positive pressure ventilation fans to extinguish the fire by 4am.
The kitchen was extensively damaged and the rest of the property was badly damaged by smoke.
Cambridgeshire Fire and Rescue Service were helped in their investigation by a fire dog from Derbyshire.
The investigation revealed the fire was started deliberately.
Anyone with information should contact the police on 101 or the independent charity Crimestoppers anonymously on 0800 555111.