When the hotel clerk puts the (blank) note in Henderson's mailbox, she folds it. Later in the episode when Goren shows Henderson the note, there is no crease in it. The paper is perfectly flat.
While Goren is interrogating Callie, she says that her father was "an [USMC] E-8, 11B." Goren replies that this denotes "a Master Sergeant, Heavy Ops." In fact, 11B is the designation for the US Army Infantry MOS (Military Occupational Specialty); and an E-8 in the USMC is a Senior Gunnery Sergeant.
Although Goram and Eames explained to Deakins (Jamey Sheridan) that they used a 'thermal image' to locate several cans buried under a tractor shed behind the Kenderson home, 'thermal' terminology was the wrong usage; the writers should have used the more appropriate terminology 'Ground-penetrating radar (GPR)' which is a method that uses radar pulses to create images of underground material such as metals, pipes, cables, masonry, ancient building foundations or even skeletons.
Coffee cans that had been buried in the ground for a long period of time would not show up on thermal imaging camera. The thermal camera senses the difference in temperatures. Only cans that had just recently been buried might show up. And only if they weren't buried that deep. He had a large number of cans that all had been buried a long time. They could not have imaged all the cans buried.
While Goren and Eams are serving the warrant. The Pennsylvania State Trooper standing behind them has a major's rank insignia on the front of his hat. Instead of the proper cap badge for that organization. Police organizations don't wear rank insignia on their hats.