It was a bit confusing, I think they skipped over some of it - Deb handled all of the planting of the evidence, not sure how she got into the tacklebox they were looking into.What was the evidence Deb planted at LaGuerta's? Last thing I saw was her getting out of her car at LaGuerta's house when she left. Then LaGuerta and Matthews were looking through boxes of evidence in, I assume, LaGuerta's garage... but what they found was the tackle box and boathouse key which I assumed Dexter planted unless Dexter gave that stuff to Deb but we never saw that scene.
Need to re-watch this episode I think...