C67 Mistake kill?

The afterglow of the setting sun shined on the cold street. A black wooden carriage came flying over, and a groom quickly waved the reins. However, the groom's face was red and swollen. There was still some blood at the corner of his mouth, as if he had suffered a heavy blow.

At the same time, two figures dressed in night attire quietly appeared on the two sides of the street