Soul Bandit

A lipogram. Can you see what letter I didn't use?

Flitting back and forth through a wall.
Vision distinguishing thus far; intuit finality of it all.
A soul pounds around vacant room,
And its instant is at hand.
Did a thing fall down from window front?
Did it fall in vain?
Fall to alarm a dozing human,
In it's wrapping?
No. Nothing did stir his dozing human.
Softly slinking,
Minding sounds of snoring,
To trap it's quarry,
And add to its group.
Looking brashly into plush wrappings.
Finding an individual that was (so long ago) of absurd looks,
Now it is lost.
Lost into oblivion.
His quarry, a snoozing woman softly gasps,
Oust a binding gasp of its lungs.
Shadows fall,
Putrid panting fills surrounding air,
Soul Bandit,
Lands at last and obtain what's his.
A hand grasps in
And contacts what's within.
Lightly rips it away from what binds within.
Toss a soul into his glass jar
And stroll away without marring midnight's black.