Quinn suspected dexter killed liddy.
Quinn sees the blood dripping from the car when miami metro visits the scene so he pry suspects the blood on his shoe is.
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Webin season 5 of dexter, detective joey quinn is heavily suspicious of dexter and what he gets up to.
Joey then hires liddy to spy on him.
Liddy gets some good.
Webhowever, what i don't like about the aftermath of rita's death is quinn's immediate suspicion of dexter being the killer.
It's completely normal to suspect someone close to.
