Sherlock Holmes a Diflaniad Y Diemwnt

A famous gem has been stolen! With John and Martha at his side, can Sherlock uncover the mystery behind this extraordinary gem? Told through Watson's blog, detective notes, school assignments, media reports, and energetic comic-strip illustrations, this introduction to Arthur Conan Doyle's classic characters will have every young super-sleuth hooked! A Welsh adaptation by Nia Peris.