After the regular season finale, the draft order for the first three rounds has been determined. The Lions will pick 5th overall in the first round, but will pick 4th in the second round (36th overall) and 3rd in the third round (65th overall).
Because compensatory picks are not determined until late February, the actual slot number beyond the third round is to be determined. The Lions traded their 4th round pick in 2013 in a maneuver to acquire Tahir Whitehead and Travis Lewis.
Here is a full list of the 2013 NFL Draft picks for the Lions.