Dumfounded, Mark let go of Agatha as he brought a hand to his neck, taking steps back away from them. That was his mistake and undoing.
The dagger was still embedded in his neck. As he grimaced, he pulled the dagger out slowly and painfully, then threw it away.
Before the dagger could fall on the ground, Agatha propelled herself forward and took hold of the dagger by it's hilt.
Using Elijah as a support, she brought the dagger up and pushed it back into his neck. Mark held her hand and tried to push her off, but she was a woman possessed as she held the dagger and pushed deeper.
"You." He gritted his teeth. Then he pushed them back and attempted to hold Agatha in her chest, but Elijah threw a quick jab at his underarm, weakening his arm.
Elijah still holding on to Agatha, lent his strength to Agatha by holding her hands and pushing deeper into his neck.