The story is written in chronological order, beginning from Day 1 (Tuesday) to Day 24 (Thursday).
Day 1: Mr. Patel witnessed an old man being mugged by two men, one beefy (Harry Cornish) and one lanky (Mark Price). The old man punched the beefy man in self-defence and was hurt badly by the resultant retaliation. Mr. Patel called the police and the old man was sent to the hospital. Due to massive injury, his head was bloated beyond recognition and thus could not be identified.
Day 2: Detectives Jack Burns and Luke Skinner interrogated Mr. Patel and made him flip through several photo albums. They managed to identify the muggers as Mark Price and Harry Cornish. Jack Burns went to look for evidence.
Day 3 to 9: Police artist did a sketch of the old limping man, hoping to identify the man. The portrait was reported on newspapers, but the man still could not be identified as none came forward. Price and Cornish were detained and they refused to speak during interrogation. Lou Slade tried to defend Price and Cornish, but was losing hope because the detectives had found too much evidence against them. The limping old man died on the 5th day.
Day 10 to 17: The turning point.QC James Vansittart, helped Slade to defend Price and Cornish. He faked several alibis and a plan that fitted the evidence and "showed" that Price and Cornish was not at the scene......