Catherine Martell

Catherine Martell runs Packard Sawmill's business affairs with a sharp mind and sharper tongue, married to Pete but entangled far more deeply with Ben Horne. She is calculating, proud, and unwilling to be underestimated, guarding the mill's fortunes and her own secrets with the same cold vigilance.

Piper Laurie plays Catherine like a woman perpetually doing arithmetic behind her eyes, every kindness a transaction. The writing gives her genuine command in a town full of softer women, and Laurie's clipped, imperious delivery makes her calculations feel dangerous rather than merely mercenary — a rare adult predator among Twin Peaks' innocents.