Too often, a show or movie buckles under its own promise. Writer and director J Blakeson’s I Care a Lot looks like a guaranteed good time, an unexpected thriller starring a steely Rosamund Pike, but the end result feels incomplete. Instead of fleshing out its characters and arc too much or too little, I Care a Lot falls somewhere in the middle, leaving us itching for more but also hoping for less.
Pike plays Marla Grayson, a court-appointed guardian who targets elderly charges, sends…