This week, the third installment of the Atticus Pünd mysteries begins on BBC One, while a new French series – 3PU: Paris Police Psychiatric Unit – also starts. We also say goodbye to Ludwig (until Christmas). Enjoy!

1 Paris Police 1910 *NEW UK PREMIERE EPISODES*
S3 E3&4/6
As Jouin quietly continues his investigation into Julien Fiersi, Labruyere teaches Hutin some golden rules about journalism, and Meg Steinheil is warned that there is a thief in her household. Weidmann is both incredulous and furious that Jeanne Chauvin has agreed to take on the notorious Madame Stenheil as a client.
Saturday 26th September, 9pm, BBC Four

2 Slow Horses *NEW UK PREMIERE EPISODE*
S6 E2/6
The reemergence of Frank Harkness and a suspicious string of murders put Lamb and team on high alert.
Wednesday 23rd September, Apple TV

3 Last Seen *NEW UK PREMIERE EPISODE*
S1 E4/6
Pressure mounts and relationships are tested as Ian leads the police to Henry and Jenna’s door.
Wednesday 23rd September, Apple TV

4 The Drop: A Snowfall Saga *NEW UK PREMIERE EPISODE*
S1 E3/8
Wanda struggles to navigate loyalty to family and her ambitions. Lamar’s new song grows beyond the label’s plans. James and Leon are forced to rethink their futures.
Tuesday 22nd September, Disney+

5 Ludwig *NEW UK PREMIERE EPISODE* *LAST IN SERIES*
S2 E6/6
A shocking death strikes close to home and leaves John shaken, with all the evidence pointing towards Joanne Kemper being the guilty party. The clock is ticking, but the Taylors are no closer to understanding how it all fits together. With everything laid out on the table, John and Lucy must place their trust in those around them as the investigation comes to a head. Has Kemper finally made a wrong move and will John ensure that justice is served before another life is lost?
Thursday 24th September, 9pm, BBC One

6 Marble Hill Murders *NEW UK PREMIERE SERIES8
S3 E1/6
The grandson of a hugely successful writer has been commissioned to write a new Atticus Pünd detective story, and Susan is asked to mentor this troubled young man. But the identity of a real killer is hidden in the text, and once again Susan is going to find herself in grave danger.
Saturday 26th September, 9.35pm, BBC One

7 The Blame *NEW UK PREMIERE EPISODES*
S1 E2&3/6
Emma’s discovery of shocking video evidence leads to an unexpected breakthrough in the case and she has no choice but to arrest a fellow police officer.
Monday 21st and Sunday 27th September, 9pm, ITV1

8 Forever Home *NEW UK PREMIERE EPISODES* *LAST IN SERIES*
S1 E1-3/6
Carol demands to know why Joan abandoned her family, and she reveals that Robert had been steadily pushing her out, isolating her within her own home until she found solace in Neil’s kindness. Kaden’s financial situation worsens as he struggles to meet the surrogate’s demands while keeping his failing circumstances hidden from Dan, and Sally attempts to distance herself from Patrick and the affair that has consumed her.
Monday 21st, Tuesday 22nd and Wednesday 24th September, 9pm, 5

9 3PU: Paris Police Psychiatric Unit
S1 E1-6/6
High-stakes psychological crime drama that follows the eccentric and brilliant psychiatrist Dr Mathias Bernardt as he heads a unique psychiatric emergency unit in the heart of Paris. When individuals are found wandering the city streets suffering from amnesia, delirium, or severe visions, they are brought to Bernardt and his specialized medical team, who have a strict 24-hour window to evaluate each patient. They must quickly decipher whether these individuals are a danger to themselves, need long-term psychiatric commitment, or are victims and perpetrators of crime. As Bernardt uncovers the hidden truths behind his patients’ twisted delusions, he realizes their repressed memories are intricately linked to bizarre, unsolved mysteries across Paris, forcing him into an uneasy, time-crunched alliance with the practical and by-the-book Police Captain Nathalie Fontaine.
Friday 25th September, Channel 4 streaming/Walter Presents

10 The Final Problem *NEW UK PREMIERE SERIES*
S1 E1-4/4
During the spring of 1959, thirteen people were isolated by a storm on a small island near Mallorca. No one imagines what is about to happen in the small hotel where they are staying: Elisa Mander, a discreet tourist of English origin, is found dead. What initially seems to be a suicide soon begins to show signs of being something much more disturbing: a murder. Basil, a retired actor who once portrayed none other than Sherlock Holmes on the big screen, will find himself, almost unintentionally, tasked with unraveling what happened. In a place from which no one can leave and to which no one can arrive, all the guests and employees will become suspects of a crime that, with each passing moment, reveals itself to be more complex and convoluted than anyone could have imagined at first.
Friday 25th September, Netflix