Alec Toombs’s review published on Letterboxd:
Appropriately enough “The Little Things” takes place in 1990, which makes sense as it’s a throwback to the serial killer flicks that dominated the decade. (For the record, it was also penned by writer/director John Lee Hancock in 1990 and at one time had the likes of Steven Spielberg, Clint Eastwood, Warren Beatty and Danny DeVito attached to direct.) It doesn’t reach the heights of David Fincher’s “Seven,” but it’s better than any of Denzel Washington’s other efforts in the subgenre from that era, i.e. “Virtuosity,” “Fallen” and “The Bone Collector.” The period setting doesn’t factor in considerably otherwise aside from the makes and models of cars characters drive and a lack of cell phones that helps fill plot holes.