When Rita brings bagels to Dexter's apartment the morning after the bachelor party, Dexter pours himself a glass of orange juice. As Dexter begins to drink the OJ, he is holding the glass with his right hand. The camera angle changes while he is still taking this first drink and he is using his left hand.
Prado's 2008 Lincoln Navigator has a Power Tailgate Latch which would close the partially latched lift gate. Lieutenant LaGuerta would not be so careless as to collect evidence and leave evidence of her snooping.
When Laguerta is looking at Prado's vehicle registration it shows a 2008 Lincoln Navigator with a VIN of 5LMFU28R04LJ23498. That VIN is from a 2004 Lincoln Navigator, the 10th digit refers to the 2004 model year.