In the kitchen scene, Lionel Simms' arm positions change between shots.
In all previous episodes, the Petrie house was located on Bonnie Meadow Road, however the item in the paper that Rob reads aloud says Bonnie Meadow Lane.
When Rob is talking to Mrs. Timmons on the phone, he accidentally calls her Mrs. Simmons at one point, then quickly corrects it to Mrs. Timmons without missing a beat.