When the flowers are discovered on the lawn in the shape of a body, a label is clearly seen above one of the shoulders, but when the police arrive the label has gone.
When Barnaby and Troy are interviewing James Harrington in his kitchen, Troy is seen leaning against the Aga cooker and resting his hands on the surface. If it was a functioning Aga, the surface would have been to hot to comfortably lean against it for any length of time.
When Jonah Bloxham is knocked out cold with the wrench, the unconscious man puts out a hand to break his fall just before he hits the floor.
After the body is pulled from the lake and Barnaby and Troy are talking over it you can see the actor's eyes fluttering.
When the body is found in the lake face down, you can see the actor's head is being cocked back to keep her face out of the water. When her body is turned over her hair is wet, but there are no water droplets on her face or dripping from it. .
When Denise Fielding is clearing the dinner table, the children have not finished their meals - they both still have food on their plates and are both still chewing food.