FILE - This combination of file photos provided on Sunday, Jan. 8, 2017, by the Bucks County District Attorney shows Sara Packer, left, and Jacob Sullivan. Sullivan pleaded guilty Tuesday, Feb. 19, 2019, to first-degree murder in the 2016 death of 14-year-old Grace Packer. Sullivan pleaded guilty to all charges in the 2016 death of Grace Packer. The penalty phase of his trial opens Friday, March 15, 2019 outside Philadelphia. A jury will hear testimony about Sullivan’s crimes before deciding on a sentence of either life in prison or death. (Bucks County District Attorney via AP, File)
FILE - This combination of file photos provided on Sunday, Jan. 8, 2017, by the Bucks County District Attorney shows Sara Packer, left, and Jacob Sullivan. Sullivan pleaded guilty Tuesday, Feb. 19, 2019, to first-degree murder in the 2016 death of 14-year-old Grace Packer. Sullivan pleaded guilty to all charges in the 2016 death of Grace Packer. The penalty phase of his trial opens Friday, March 15, 2019 outside Philadelphia. A jury will hear testimony about Sullivan’s crimes before deciding on a sentence of either life in prison or death. (Bucks County District Attorney via AP, File)
FILE - This combination of file photos provided on Sunday, Jan. 8, 2017, by the Bucks County District Attorney shows Sara Packer, left, and Jacob Sullivan. Sullivan pleaded guilty Tuesday, Feb. 19, 2019, to first-degree murder in the 2016 death of 14-year-old Grace Packer. Sullivan pleaded guilty to all charges in the 2016 death of Grace Packer. The penalty phase of his trial opens Friday, March 15, 2019 outside Philadelphia. A jury will hear testimony about Sullivan’s crimes before deciding on a sentence of either life in prison or death. (Bucks County District Attorney via AP, File)