The second series of the murder mystery drama "Ludwig" continues to blend unconventional storytelling with a blend of genres, sparking mixed reactions among viewers. The show centers on David Mitchell’s eponymous crossword-setting sleuth, who approaches each case as a complex puzzle, often likened to a variety of brainteasers such as chess problems or sudoku grids.

In the latest episodes, Mitchell’s character teams up with his sister-in-law Lucy, portrayed by Anna Maxwell Martin, to investigate a local Member of Parliament suspected of performing human sacrifices in pursuit of eternal life. This plotline exemplifies the series’ unusual mix of influences, combining elements reminiscent of Agatha Christie’s detective stories with motifs drawn from Hammer Horror and folk horror like "The Wicker Man."

Mitchell’s portrayal of Ludwig is consistent with his previous performances of socially awkward, fussy characters, notably his role in the sitcom "Peep Show." His on-screen persona juxtaposes awkwardness with sharp wit but has been criticized by some for lacking subtlety and for overpowering other characters, particularly the professional police officers played by Dipo Ola and his team. Critics note that the realism of police procedures suffers when the specialised role traditionally occupied by the CID is ceded to an amateur detective whose presence seems to overshadow official investigators.

Scenes such as a panic attack at a wedding-turned-funeral, and subsequent police officers abandoning their roles to follow Ludwig, strain credibility further. While viewers are often willing to accept improbable scenarios common in ‘cosy crime’ narratives, the show’s characters and their motivations need to remain psychologically believable to maintain engagement.

The series also attempts to incorporate a parallel storyline involving political corruption and institutional wrongdoing, which some observers argue clashes tonally with the overall quaint, small-scale murder mystery atmosphere, veering towards the intense procedural drama seen in series like "Line of Duty."

Despite these tonal inconsistencies, the production benefits from solid performances by the supporting cast. Mark Bonnar’s role as Gareth Fisher, the local newspaper editor, has been singled out for adding depth and balance, lending the show stability amid its tonal shifts. Each episode also features guest star appearances, with recent episodes including Gary Beadle as a contentious father of the bride and Michelle Greenidge portraying his inebriated wife, offering moments of levity and charm.

While "Ludwig" continues to carve out its niche by combining eccentric mystery elements with puzzle-like storytelling, its blend of genres and character dynamics invites both intrigue and criticism from its audience.