A criminal gang in Cardiff set up an elaborate scheme to import cannabis from the United States.

When their insider is arrested, the gang leader has to scramble to keep his illegal operation alive.

Get in touch at behaveyourself@bbc.co.uk

Presenter: Rima Ahmed. Reporter: Matt Murray. Produced by Luke de Costa. Researcher: Bethan Davies. Social Media: Fede Marilotti. Online Producer: Rachael Smith. Executive Producer: Luke Eldridge. Commissioning Editors: Gareth Hydes and Alistair Miskin.

Stephen Woodward builds a million-pound business selling access to illegally streamed TV channels.

He’s digitally savvy, however, it’s not long before he starts leaving the police clues about his cyber crimes.

Get in touch at behaveyourself@bbc.co.uk

Presenter: Rima Ahmed. Produced by Luke de Costa. Researcher: Bethan Davies. Social Media: Fede Marilotti. Online Producer: Rachael Smith. Executive Producer: Luke Eldridge. Commissioning Editors: Gareth Hydes and Alistair Miskin.

Michelle Mills and her ex-Royal Marine lover, Geraint Berry, want to continue their romantic affair.

The lovers plot how to remove Michelle’s husband, Christopher, from the picture and cover their tracks.

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Presenter: Rima Ahmed Reporter: Meleri Williams Produced by Luke de Costa Researcher: Bethan Davies Social Media: Fede Marilotti Online Producer: Lee Macaulay Executive Producer: Luke Eldridge Commissioning Editors: Gareth Hydes and Alistair Miskin

Gary Hardy, Ronald Knowles and Steven Houston are approaching pension age, but they refuse to settle into their retirement years. Instead, they combine their skills and hatch a deadly plan to make and supply deadly weapons to British gangs. But after a life of crime, is this one job too many for the old boys?

Get in touch at behaveyourself@bbc.co.uk

Presenter: Rima Ahmed Reporter: Jeremy Ball Produced by Luke de Costa Researcher: Bethan Davies Social Media: Fede Marilotti Online Producer: Lee Macaulay Executive Producer: Luke Eldridge Commissioning Editors: Gareth Hydes and Alistair Miskin

Herbert Smith, the ‘Handcuff King’, and his girlfriend, Lottie Roberts, are circus performers who secretly buy and sell babies for profit in Edwardian Britain. But they’ll need more than a disappearing act to fight the families who come after them.

Get in touch at behaveyourself@bbc.co.uk

Presenter: Rima Ahmed Reporter: Richard Tisdale Produced by Luke de Costa Researcher: Bethan Davies Social Media: Fede Marilotti Online Producer: Lee Macaulay Executive Producer: Luke Eldridge Commissioning Editors: Gareth Hydes and Alistair Miskin

HMP Kirkham Prison governor Kerri Pegg and drug dealing gang boss Anthony Saunderson strike up a dangerous relationship.

If they're found out, it will have life changing consequences for Pegg.

Get in touch at behaveyourself@bbc.co.uk.

Presenter: Rima Ahmed. Reporter: Mat Trewern. Produced by Luke de Costa. Researcher: Bethan Davies. Social Media: Fede Marilotti. Online Producer: Rachael Smith. Executive Producer: Luke Eldridge. Commissioning Editors: Gareth Hydes and Alistair Miskin.

Former zoo worker Bradley Tomes hatches a plan to steal and sell Humboldt penguins Patrick and Penny from South Lakes Safari Zoo in Cumbria.

Get in touch at behaveyourself@bbc.co.uk.

Presenter: Rima Ahmed. Produced by Luke de Costa. Researcher: Bethan Davies. Social Media: Fede Marilotti. Online Producer: Rachael Smith. Executive Producer: Luke Eldridge. Commissioning Editors: Gareth Hydes and Alistair Miskin.

Criminal mastermind, James ‘Jimmy’ Sheen, steals a world famous golden toilet worth £4.8m from Blenheim Palace. But who’s going to take it off his hands?

Get in touch at behaveyourself@bbc.co.uk

Presenter: Rima Ahmed Reporter: Clodagh Stenson Produced by Luke de Costa Researcher: Bethan Davies Social Media: Fede Marilotti Online Producer: Lee Macaulay Executive Producer: Luke Eldridge Commissioning Editors: Gareth Hydes and Alistair Miskin