Overview
- Episode three, Clues in the Blood, airs on December 4 at 10pm on Channel 4, with the full series available to stream on channel4.com.
- The programme follows the Detection trial, in which Damian, 49, receives three‑monthly blood tests after melanoma to monitor for recurrence.
- It also features Lee, 58, who has cancer of unknown primary and contributes samples to the CUPid study seeking molecular clues to his tumour’s origin.
- Researchers emphasize promise alongside limits, noting that creating a test sensitive and specific enough to reliably detect very early cancers remains a major challenge.
- Produced with Dragonfly and Cancer Research UK, the series also highlights Sarah Blagden’s prevention vaccine work and Richard Mair’s adaptive brain tumour trials, with CUP cases accounting for about 5 percent of cancers.