The Dark (1993)

Grave diggers Jake and Ed discover a tombstone tipping into the ground. When they try to set it straight, they find a huge tunnel running under the graveyard and decide to investigate.  What they don't realize is that a carnivorous rodent monster is living in the tunnels under the cemetery and eating corpses.

Meanwhile, in a cafe, Professor Gary is minding his own business when waitress Tracy is harassed by a customer. Chivalrous Gary comes to the rescue and gets in a fight with a motorcycle gang, who take out their anger by shooting the chef and wounding Gary.  Somehow this causes Tracy and Gary to fall in love and while Tracy watches the injured Gary sleep, she leafs through his notebooks which are filled with drawings of, and an obsession with, giant rats.  Nope, no red flags there.

You see, Gary has run into this creature before, and he wants the rodent alive. So he's heading for the graveyard where Jake and Ed are currently hiding in their home to avoid being dragged underground by the creature.  Also on the way to this location is ex-agent Bucker, who unlike Gary, wants the monster dead because it killed his partner. Oh no, whatever will they do?

I wasn't expecting much from this since it's on a 20 pack of horror, but it was actually pretty enjoyable.  It's kind of slow in places, but it has Stephen McHattie and Brion James as good points.