If GBC dressed Allison's body in the clothing following her death, I wonder why he would have bothered with a jacket, as well as a top.... would just take more time and effort.
...... so maybe, as stated as a possibility in the Autopsy Report, the jacket was used as a ligature in strangulation!
edited by me...
maybe, could be, he redressed her because he murdered her at night, the original story was going to be that Al went for a walk at night, .he assumes she would bung a jacket on.. but his timing was all off come morning,, things went to hell for Gerard very early and his yarn about a morning walk , a bit of quick blithering, him driving around looking for her , with the big chunks out of his face and all....first thing Const Ash noticed, and you have to wonder how come Bwana didn't and Olivia didn't>> ?? those scratches were like a beacon to Const Ash...