A new BBC Sounds show investigates the complicated case of Freddie Scappaticci. Plus: five of the best podcasts to switch off to

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The Optimist Project with Yara Shahidi
Widely available, episodes weekly
Yara Shahidi is the award-winning actor of comedies Black-ish and Grown-ish, but she reckons she could factor optimism into her life more – so she’s decided to make a podcast in which she learns how to do just that. Shahidi speaks to the likes of singer, actor and “professional self-affirmation writer” Janelle Monáe and Yale’s happiness expert Dr Laurie Santos for mood-boosting chats, and invites you to join in with her optimism project. Hollie Richardson