Meanwhile , Villa spars with Captain Hornstock when he discourages her from pursuing an uncertain case .
When Rosewood and Villa suspect a brilliant doctor has killed two of his patients , they must find a way to make their case with limited evidence .
Villa spars with Captain Hornstock when he discourages her from pursuing an uncertain case .
When Rosewood and Villa suspect a brilliant doctor has killed two of his patients , they must find a way to make their case with limited evidence .