Connected in Bloomington, MN

There's been a murder.
An eyewitness has come forward, and the killer has confessed.
But there's a problem. The two are conjoined twins, literally joined at the hip since birth. For the police, keeping the murderer in custody means locking up his innocent brother along with him-an untenable situation.
The frustrated legal system wrestles with how to prosecute a murderer who is apparently immune from punishment, as any attempt to exact justice would surely affect his conjoined twin.
It appears there can be no satisfactory outcome. That is, until a surprising discovery is made.