The Secret of the Missing Lady

For many, many years, the esteemed Mr. Lokon, the beloved master of Nickel and Horn, has been taken care of by a housekeeper. Not a day passed without Frau Pearlmuter stopping by to see the old detective! But this winter morning, everything went awry: for some reason, she didn't come! What an unprecedented event! The apartment is in disarray… How will Mr. Lokon manage without his assistant? What if Frau Pearlmuter is in trouble? Nickel and Horn, the brave detectives, immediately set out to search for her!