His imperturbable face has been as inexpressive as his rusty clothes.

It opened to reveal the pained gaze of an inn servant and the imperturbable face of a temple priest.

The suspicion of a frown crossed his imperturbable face.

Hans looked keenly at me, and, strange enough, for once I thought I saw a smile on his imperturbable face.

T'Saaf moved her eyes away from the roster to the imperturbable face before her.

As though for reassurance he looked up at the imperturbable face in the portrait.

The last sight either of them ever saw was Lessin's imperturbable face staring at them with neither pity nor regret in his eyes.

They watched him with imperturbable faces.

Sheriam stared back with that ageless, imperturbable face, tilted green eyes not seeming to blink.

He also saw the usually calm and imperturbable face of Jackson show annoyance.