《设得兰谜案》第四季已获得预定，依旧由Douglas Henshall主演，预计于2018年播出。第四季由David Kane担任主要编剧，将会延续第三季的模式，用六集篇幅讲述一个完整的案件。

　　500年来，英国历代国王、王后收藏的上百万件艺术品和装饰品汇集于此，使得皇家收藏室成为世界上最大的艺术品收藏室之一。本系列节目深入洞察这个非同凡响的收藏室，揭示这些伟大艺术品的内涵、使用方式和传奇来历。透过这些收藏品，我们将一窥每位国王、王后的志趣——他们最看重哪样物品，他们的艺术思想，以及他们跟艺术的渊源。本系列打开一扇神奇的窗户，带我们探究英国君主制的沿革、君主制与英国乃至更广阔世界的关系。

　　IKEA is undoubtedly one of the world's most successful, enigmatic, and recognisable global brands. Last year nearly 800 million people in 49 countries visited its stores, which had a turnover of more than £30 billion.
　　In a major new three-part series, our cameras explore the world of IKEA, from the design studios to factories and stores, for the very first time.
　　Few companies can legitimately claim to shape the way we live today. Fewer still inspire a cult-like devotion in customers and employees alike. But IKEA is not like other companies.
　　The famously secretive Swedish furniture retailer is guided by the principle of creating 'the better everyday life for the many people'. But what is the secret to its success? How does the machine of IKEA affect the people who work for it, and how does its ruthlessly efficient business model affect the world?