Podpis čtyř je po Studii v šarlatovém druhou novelou, kde se objevují postavy Sherlocka Holmese a doktora Watsona. Tajemný a spletitý případ je tentokráte okořeněn hledáním pokladu indického rádži a vychytralým a zákeřným protivníkem. Navíc zde doktor Watson potkává svou budoucí ženu.
The Norwood Mystery
'For me, Watson, life is not so interesting,' says Holmes.'I loved to read the newspaper, hoping to find some news of an interesting crime for me to investigate or a dangerous criminal for me to catch. Where are all those clever criminals these days?'Then, suddenly, a wild, excited young man runs up the stairs to Holmes' room. He has a story to tell about a strange crime that took place in Norwood. But who is the criminal? And is he dangerous? Life, for Holmes, suddenly starts to get interesting.
As a lead-in to preparation for the Cambridge First Certificate examination, Think Ahead to First Certificate offers intermediate students following general communicative courses a bridge to the accuracy required for FCE, particularly in the areas of structure, vocabulary and writing skills.