Rosie Sanchez, 38, and her 40-year-old boyfriend Anderson Nunez were found dead in their fifth-floor Sheepshead Bay apartment on Batchelder Street after their bodies, in a state of decomposition, were discovered on a Sunday evening in January 2016. The couple had been killed days earlier, on December 28, 2015. The scene showed extreme violence: Sanchez suffered a gunshot wound to the head and a stab wound to the heart, while Nunez had been shot twice and stabbed more than 30 times.

Investigators quickly focused on two suspects: Sanchez’s 15-year-old daughter and the daughter’s older boyfriend. Reports say the teen went about her life for days after the killings until she told a cousin, who then alerted police. The 28-year-old boyfriend was later accused of supplying the gun and of shooting Nunez; court papers alleged he returned to the apartment and stabbed Nunez again.

The daughter was arrested and charged as an adult with two counts of second-degree murder and weapons possession; the boyfriend was arrested about a month later. Did anyone in the neighborhood see or hear anything unusual around December 28, 2015?