My take on when Garrison became a suspect is slightly different than yours. Garrison had been sitting in jail on the weapons charge for over 4 months in July 93 when SPD had his bond lowered in hopes that he would bond out and agree to talk to them about the 3MW case. SPD obviously saw him as a suspect at that time, or at a minimum thought that he had information concerning the abduction. How that all came about except for the fact that he was an ex-con is not publicly known.
While with SPD at a motel on 7/29 Garrison runs off. He is out on lawful bond; never the less SPD cant find him to talk with him further. On 8/08 he rapes the college coed. He is finally rearrested on 8/17. Then 11 days later he leads LE on the search after providing information claiming that a friend had confessed to killing the women at a drunken party.
Isnt it quite possible that Garrison was told in his friends confession that the womens bodies were disposed of on the farm property but not know the exact spot? Perhaps he thought that once he took LE there that the bodies could be found easily and they were not? Or perhaps his attorney representing him on the weapons charge advised him to shut up. He may very well have been trying to leverage a better deal for himself on the weapons charge, which he was eventually convicted on later that year. He was not yet a suspect in the rape of the coed and was not hooked up on that charge until the following year.
My point is that he was a suspect in the 3MW case beginning sometime during the March August 93 time frame before coming forth with the confession story, and may have been a developing suspect in LEs eyes even before that.
You may very well be right about him becoming a suspect in March. I am talking more about when the crime occurred. Originally I thought he was a suspect at that time, however I read he became a suspect while in jail. So if he was playing a game with them he was incredibly foolish, or he actually has relevent information. The police made several statements to the press that he had information not known to the general public. This peaked there interest in him, and makes me believe he does know something. Whether or not he was actually involved is another story.