A 17-year-old faces charges after his 4-year-old half-sister was found dead behind an Upstate home. William Hester is accused of kidnapping and killing Joanna Lockaby. Greenville County investigators said they believe Hester suffocated Lockaby, causing her death. They add…Lockaby was initially reported missing at about 2:20 p.m. Tuesday before her body was found in a plastic bin, behind the home along Chevy Chase Boulevard she shared with Hester. An arrest warrant said Hester confessed to suffocating the child.