Crime Story Part III

Location: Detective Corny's Office

The frowning chief comes into the room.
'Corny what have you got on the kidnapping?'
'Chief, I just found out who the fingerprints on the photoframe belong to. Some guy named Harry Parkinson. I just saw a photo of him. He seems so familiar...hold on,' Corny picks up the newspaper that he was reading this morning from the recycle bin. He opens it up to the second page that has the headline:
'Man Escapes Mental Ward'
...and next to the headline is Harry Parkinson's face.
'Oh my goldfish! The boy is in the hands of some crazy guy!' exclaims Corny. The chief, however is unmoved by this information.
'What else do you know?' asks Chief
'This is weird but the blood found outside the window was AB positive and you know how that's really rare'- says Corny
'The boy is a rare blood type so what?'
'So. So is Harry Parkinson, an AB positive, I mean,' says Corny
'What are you trying to say Corny?' says the chief impatiently
'I'm saying I'm pretty sure the wife isn't telling us something.'

Yeah um, I have no idea why past Marianne thought all detectives just happened to know everyone's blood type but anyway...The next part of the story gets intense let me warn you. really intense.