But this lengthy police affidavit from the McCook Police Department paints a different picture of the teenager.
It said he called Kailee the night she disappeared, that they may have had a romantic relationship.
That blood was found in his truck, on his clothes and on his bed.
And, that he changed his story after multiple interviews with police.
Police said Kailee's cell phone showed 2 incoming phone calls from a subject labeled "Steph" at 2:54 AM the night she disappeared.
Steph ended up being Kirkpatrick.
Kirkpatrick says that night Kailee told him they shouldn't talk on the phone anymore, because it would make her boyfriend mad.
And Kailee's last post on facebook read, "I was scared to answer loves call but since I did for you, you better make the fall."
The officer wrote, "I asked Stathis if there was any way I could help her. He told me that it was too late to help her."
Police say Kirkpatrick told them that her burnt body could be found in the Bartley cemetery.
Then, "Stathis began to act in a bizarre manner, crying, saying she is dead, and petting and kissing a wall."
http://www.khastv.com/news/local/Affidavit-reveals-disturbing-details-in-McCook-murder-case.html