Aya Hachem was killed in the crossfire of a contract assassination. Who ordered the hit and how many people were involved in the conspiracy to kill? Detectives must uncover why an innocent woman died.

In December 2013, 17-year-old Jayden Parkinson went missing. Detectives suspect she been murdered, and have many questions for her ex-boyfriend. Has Jayden been killed and, if so, where is her body?

Detectives in the Incident Room must work tirelessly to track down and bring to justice four ruthless teenagers who killed 63-year-old Gurmail Singh in his Huddersfield corner shop.

In Swindon, 60-year-old Tom Rogers was brutally stabbed by a stranger. Investigators must piece together every shred of evidence to see whether the same killer has attacked before.