The Dice Are Weak With Me

First, the door slid into the wall? Does that mean my only exit is the door on the northern wall -- and not the southern wall where they originally entered? But, yes, Kaspar took a 5-foot step before drinking the potion. The step was north in preparation to flank (his goal from the get-go).

Finally, Castille gets a 20 on his knowledge arcana check. Depending on what knowledge he gains, the following may need modification (to something more like "Run away!" for example).

The fiend's voice is a source of pain in Castille's ears. His spear did not reach deep enough to silence its taunts. Watching Kaspar stagger backwards and drink a potion of healing conjures feelings of both worry and relief. Even so, Castille takes a step back and then drives his weapon forward again. "Miss again, demon, and I'll send you back to the depths of oblivion."

Using yet another action point -- don't worry I'm keeping track -- Castille still only manages a 11. Damage would be 6.

After the fiend finishes, Kaspar shakes off the haze of injury and attempts to reinforce his friend's waning attacks.

Taking another 5-foot step eastward into flanking position, Kaspar readies his rapier and drives it from the floor upward.

Rolled a 4 on his attack. Forget it.