"I'll be leaving this soon, back on the road," he muttered beneath his breath.
She heard him muttering beneath his breath, talking to himself.
He looked down at the floor, muttered something ob-scene beneath his breath.
Ned heard muttering from beneath the windows and the far end of the hall.
She muttered beneath her breath to keep from shrieking out the words.
One of the security officers muttered something beneath his breath.
"You and I are going to have to reach an understanding, lady," he muttered beneath his breath.
"I'd say you have some thinking to do," Ramsay muttered beneath his breath.
"He kept an eye on you," her companion muttered beneath his breath.
"Stronger men than you have tried," he muttered beneath his breath.