BBC iPlayer will release the second series of Ludwig starting 20 August. The new episodes feature David Mitchell returning as John Taylor, who has transitioned from a puzzle setter to a crime scene consultant. Taylor works with the Cambridge Police Authority on cases classified as impossible crimes.

The second series introduces a professional partnership between Taylor and DCI Russell Carter, played by Dipo Ola. The narrative focuses on multiple murders and cover ups involving high ranking officials. Parallel to these cases, the plot continues the search for Taylor's missing identical twin brother. Anna Maxwell Martin returns as Lucy, the sister in law of the lead character.

The production follows the events of the first series where Taylor assumed the identity of his brother. This second installment maintains the setting of Cambridge and the central mystery of the missing sibling. The broadcaster has released a trailer detailing the shift in Taylor's employment status within the local police force.

The series is available for users to add to their watchlists on the BBC iPlayer platform ahead of the August launch date. The first series established the character of John Taylor as a master puzzle setter. The show is a BBC production.