Alternate endings???

Rating: 10/10 (15 March 2015)

just watched this movie again on a premium movie channel. I swear it's got a different ending than when I rented the movie a couple of years ago. Was there a different ending filmed for the movie channel ending? Help! It's driving my husband and I crazy!!! In the movie channel version the movie ends with detective Loki hearing a whistle at Alex's house but then walking off screen. The rented version I remember had him recognizing that the car had been moved and finding Keller in the hole followed by Keller's trial and acquittal. What's up? Are my husband and I just making things up or was the movie released with alternate endings????? It's been driving us crazy and I don't see any mention of alternate endings anywhere in the IMDb information.