On October 11, 2016, 32-year-old Nathan Daniel Dieckmann was found shot to death inside a residence in the Mt. Pleasant neighborhood of St. Louis, Missouri. Officers located Dieckmann and his girlfriend, 21-year-old Taylor Lane, both with fatal gunshot wounds; the scene has been described as a double homicide that likely occurred during a home invasion. The couple’s dog was also shot but survived.

Dieckmann, who worked in construction and took part in mixed martial arts, left behind two young sons. Detectives have investigated the case for years, classified it as a cold case, and offered a reward for information, but as of the latest updates no suspects have been publicly identified and no arrests announced.

Did anyone in Mt. Pleasant at the time notice suspicious activity near Pennsylvania Avenue and Dakota Street on or before October 11, 2016?