Oh, and it can get worse, it can always get worse. Because now we get a low shot of Dean, against a bright, day-lit sky (where did the night go?), standing at the trunk of a car and loading a gun, saying to himself, "I'm sorry, Sam, you know me, I just can't wait." Because, again, the car presumably used by an attempted murderer is just left out on the street for Dean to return to sometime the next DAY?!
Moving along, folks. In the sewers, Dean flashlights his way around, the odd lump of tissue getting in his way as he traverses the sweating sewer floors. He makes his way to NotDean's little lair, all piles of clothes and lit candles, and immediately toward a suspiciously shaking length of canvas. He pulls on the fabric and finds...Blondie! Rut-roh!
Cut to Sam sitting with NotBlonde having a beer (so, nighttime, presumably?). NotBlonde -- who is totally without any sort of cut or wound despite having been tortured and thrown about the night before, so, nice detective eyes, Detective Sam -- wonders, if the shape-shifter is real, how Sam plans on stopping it. He says "silver bullet to the heart," and she narrows her eyes and conks him on the back of the head with her beer bottle.
In the sewer, Blondie tells Dean that she was walking home and got hit over the head, waking up "just in time to see that thing turn into me." Yes, because women who were beaten and nearly raped THE NIGHT BEFORE would normally be just out and about, walking home like it was any other regular workday. Why do they have to get so complicated with the comings and goings? Why not just have the thing turn into her, since it did spend a few hours with her the night before? After all, it was able to turn into both Zach Guzman and Fancypants without tying them up. Why, why, why, why, why?! Dean unties the bruised-faced Blondie and tells her they have to hurry since Sam went to see "her."