Otar Botkoveli will contact Jensen during his Second Visit to Prague. This will begin this opening portion of the side mission. He will ask you to visit the owner of the Red Queen, a woman named Masa Kadlek.
Make your way into the Red Light District and into the Red Queen.
Head inside the Red Queen and make your way up to the second floor. Turn left.
On this floor you will find Masa Kadlek. Just go through the Manager's Office door. Inside is your person, with her hired muscle. Approach the table to begin the conversation. She will give you the Photo of Dominik so you know who you are looking for.