The usual fistfights. One man wearing a strange necklace dies when the collar is removed.

A car crashes over a cliff and explodes.

Several car chases.

A man is injected with a drug (to do away with his will).

A man is made to drink a chemical which reverses the injection he received earlier.

Children under 6 are not likely to be frightened by Crimson Ghost (a skeleton with eyeballs in a black cape) but it's possible.