I highly encourage everyone to purchase Empowered vol. 7 by Adam Warren. I am even going to post the Amazon.com link (non-affiliate):
http://www.amazon.com/Empowered-Volume-7-Adam-Warren/dp/1595828842/

There's a great knockout scene in the first story featuring Ninjette. We first see the aftermath: Ninjette is unconscious after being kidnapped by the Ninja Clan.

The clan recollects how they managed to kidnap Ninjette. Flashback to a scene where Ninjette is in a tree, preparing to shoot a dart into a clan member. Right before she can blow the dart however, ANOTHER clan member shoots her in the neck with a tranquilizer dart.

Ninjette falls from her perch and gets chained up. Fast foward to the present where she starts to wake up, bound and gagged.

Awesome scene from the great Adam Warren. There's plenty more bondage in this 200 page graphic novel. The quality of the printing is up too. Last I checked, this book is ONLY $11 on Amazon.com. That's an incredible deal for such a fetish packed book.

Buy it.