This case study places students in the role of forensic chemists at the New York State Police Forensic Investigation Center. They are tasked with determining the biological age of skeletal remains found in a recently purchased home. With no hits in the DNA database, investigators are hoping to use the biological age of the remains to compare to missing persons reports and develop a lead on the case. The technique employed involves determining the L:D-Asp ratio by gas chromatography. The case is designed for use in an upper-level forensic chemistry course during a section on internal standards and instrumental techniques used in forensic chemistry. The case could also be used in an analytical or instrumental analysis course.