Rick's heart stuttered, and he felt his face freeze as the blood left it.

Nalademus heard the sounds of marching feet, and his heart stuttered.

Her heart stuttered at the concerned look on his face.

She saw it, and her heart stuttered to a stop for a moment.

I heard something scuff in the direction of the door and my heart stuttered.

Her heart stuttered at the sound of Angus's voice.

His heart stuttered, beating so rapidly that it almost tripped over itself.

He grinned at her again, and looked so young Peabody's heart stuttered.

His heart stuttered when her garters came into view.

But his heart stuttered in his throat, making words impossible.