Roman mysteries

I think the book is great . It has lots of adventure and it has a huge mystery.In the beginning of the book the Dad losses his ring while stamping some important papers in his office then he leaves to talk to his daughter about something then when he came back the ring was missing.So then he rushed down to tell his daughter who always finds his missing stuff.But the dad knew that it was stolen. So then it lead them to the theif who stole the ring the dads best friend.The dads friend was the least person he would expect. characters; dads old friend, dad, daughter