looking for a mpreg story

I hope I'm not weirding anyone out but I'm looking for an mpreg for Spence and Morgan.
The story starts off with Morgan going to this group home for pregnant teens because Spencer who happens to be a pregnant teen witness a murder while walking in the park.
Now the killer is after Spencer. I think Spencer should be fifteen in the story he's still a genius. He was sent to the home because his teacher raped and his dad doesn't want him to keep the baby. The last chapter I read one of the workers from the group home were kidnapped.
I hope this is enough information.