Dr. Kettner had a motive, which made this clew seem the right one for
such a deed as committed at Fort Thomas. Being a bigamist and fearing
that his first wife, who followed him so many miles, would prosecute
him, his only hope was to secure the marriage certificate and other
evidence against him. The Engelhardt girl always carried the marriage
certificate in her bosom, beneath the corset, and more than once said
she would never part with it.