Hands clasped behind her back, Mary smiles down at her husband and waits for him to get tired of testing the shibari knots she’s wrapped him up in.

When he finally falls still and looks up at her, she holds up the generously proportioned vibrating butt plug she’d been hiding behind her back.  ”Now what’ll happen is, I’m going to put this in you, and then I’m going to get on your cock.  And I’ll adjust your settings based on how much fun I’m having.”

Her grin broadens with his wide-eyed look past her shoulder. ”And don’t expect Sherlock to come get you out of this.”  She follows his glance.  ”He’s going to stay out of trouble and keep his hands off you, for once.”

Sherlock struggles against the knots binding him to his chair and makes a muffled noise into his gag.