The motion signified a hidden knife, raised in a murderer's hand.

He lay back again, knowing a hidden knife was there.

The jacket I was putting on had a hidden knife!

The survivors escape due to a hidden knife they use to wound the Viper.

Surreptitiously, I felt for the hidden knife in the jacket.

Vexille attacks him with a hidden knife, revealing that his blood is still human - he has not used the process himself.

He called for mercy and when my brother stopped, the boy pulled a hidden knife.

"Did you expect me to come at you with a hidden knife?"

In the anime, he has a prosthetic right arm which contains a hidden knife.

Her waist dagger and the two hidden knives followed after.