Tiffany Becker

Nestled among the historic homes is Jocelyn Peters' apartment building.

Her apartment's right up there.

Is it easy to access that apartment?

Jocelyn Peters lived in apartment 201.

A 30-year-old third grade teacher had been murdered in the middle of the night while she was sleeping in her bed.

Authorities believe she was killed between 3 a.m.

and 3.40 a.m.

How do you get inside the building?

Jocelyn's boyfriend, Cornelius Green, had been in Chicago for three days.

When he returned to St.

Louis on Thursday, March 24th, he told investigators he drove his car, a white Kia Optima, straight to her place.

Jocelyn's mother, Lacey Peters, says she received an alarming call from Cornelius soon after.

When he called me, he told me that he went to go check on her and she was on the floor.

Deidra Peters, Jocelyn's aunt, says she had heard something was wrong with her niece.

She immediately began driving towards her apartment, but before she could get there.

Lacey had called and she said, Deidre, pull over.

And I don't remember anything that happened at that point because I lost it.

Police had given Lacey news no mother wants to hear.

Jocelyn, her eldest daughter, was dead.

I just remember just crying and just screaming.