With a giggle and a twist of his wrist, the knife entered his foe's stomach. The gasp and whimper that escaped from her lips made him laugh. "Why is this always so delightful?" he wondered. And then Jon disappeared, and reappeared Arthur.
The blond hair of Jennifer Jareau, or JJ, was shiny, and it stuck together from the warm, wet blood that was flowing from her temple and her stomach. He stared at her hair, wondering what answers it could hold. He always did this though, staring at a scene and wanting to know all the "secrets" it contained. He held a lock of her hair between his fingertips and stroked it softly. "It is gorgeous." he murmured quietly.
The frightened, pained JJ looked at him, her eyes wide as he continued touching her hair. "Why are you doing this to me?" she asked him. He looked at her, surprised she did not know the answer.
"Your hair, it captivates me. The way you speak with conviction, yet so softly, is amazing. How you walk with a grace and the way you hold your little one, Henry." he said with a purr. "I have done this to you because I love you. And I cannot allow what I love to suffer the pains of this earth. So, I spare you of the pain of living and let you take the path of eternal sleep. I have killed you to spare you the pain of which I will no doubt have caused you should I have lived. For, I hurt all of those who I am near. Those are the reasons for which I, as you said "am doing this to you" he said with passion in his voice and adoration in his eyes.
JJ looked at him in fear. "But… Henry… my son… What of him?" she asked.
He looked at her, and shook his head back and forth with amazement. "Even on your death, you worry about others. Oh, how I love you so. Your son already sleeps the eternal sleep of death." he said, regret and pain merging into his voice. "It is a shame; I would have loved raising him as my son. But, I lost control and Jon won for control over this body of mine and killed him." the words were but a whisper, and Arthur showed pain.
JJ was shaking, not from physical pain, but emotional. She was so pale, she would not be alive for much longer. "Henry." she moaned, tears leaking from her eyes. Arthur picked up the knife that Jon had stabbed her with.
"Your pain ends now." he cried out, for he could no longer take it. He took the knife and slit her throat. He watched as the beautiful light of her soul left her eyes. "What are you going to do now, Arthur?" asked Jon. Because I will keep killing all of those you see.
Arthur did not reply to the voice in his head. He took three steps back went to his knees. "Forgive me, love." he whispered to JJ. He placed Henry's dead form next to her. And then he took the knife and stabbed his heart. He keeled forward, bowing before his beautiful JJ. His breathing stopped, and he laid there, bowing in the dirty deserted alley until the BAU came and his body was moved.