The Dallas Police Department remains persistent in its pursuit for answers in the unsolved homicides of Chaunthina Mills and Dwight Ray, which occurred over a decade ago. On January 20, 2014, both Mills, 28, and Ray, 37, were discovered with fatal gunshot wounds in Dallas on the 5900 block of Highland Hills Drive. Their lives are abruptly ended by an unknown assailant whose motives and identity remain shrouded in mystery…