BritBox is the best streamer for all things British television. From mysteries to crime dramas, the streamer is the world's best way to watch the very best Great Britain - and the rest of the United Kingdom - has to offer. August 2025 promises to be BritBox's best month yet, with several high-profile debuts scheduled for later in the month. From the searing drama Happy Valley to the moody suspense series Dublin Murders, these shows are guaranteed to give you a good time - and may send a shiver or two down your spine. Watch With Us has compiled a list of all the new additions to BritBox below. August 8 In the Footsteps of Killers Season 3 | BritBox Exclusive, North America Premiere | 6 x 60' | Released All at Once Silent Witness star Emilia Fox and Britain's top criminologist, Professor David Wilson, attempt to solve Britain's most heinous murders in this unique true-crime series. What's New on Netflix in August 2025: 'Wednesday' Season 2 and More August 15 Celebrity Escape to the Country Season 1 | New to BritBox | 5 x 60' | Released Weekly Fancy swapping the hustle and bustle of city life for an idyllic rural retreat? The team helps a host of well-known faces find their dream homes in the glorious British countryside. August 19 Sister Boniface Mysteries Season 4 | BritBox Original, BritBox Exclusive, North America Premiere | 8 x 60' | Released Weekly The nun who is the police's secret weapon is back. Crime solving is her habit! The winemaking, moped-riding nun investigates more ugly deeds in beautiful surroundings. It's the mid-1960s in the quaint Cotswold village of Great Slaughter, but strange things are afoot. A killer scarecrow stalks the streets, all the women call a general strike, and the police embark on something called "team building." Sister Boniface (Lorna Watson) is looking forward to a wholesome weekend away with the sisters, only to be confronted with yet another murder. August 26 Playing Nice Season 1 | BritBox Exclusive, USA Premiere | 4 x 60' | Released 2x Upon Premiere, Then Weekly Set against a sweeping Cornish landscape, two couples discover that their toddlers were switched at birth in a hospital mix-up, and face a horrifying dilemma: do they keep the sons they have raised and loved, or reclaim their biological child? Living a waking nightmare, Pete (James Norton) and Maddie (Niamh Algar) are jettisoned into the world of the other couple, Miles (Mare of Easttown's James McArdle) and Lucy (Jessica Brown Findlay). At first, it seems all four are agreed on a solution, but it soon becomes clear that hidden motives are at play. How far can each couple trust the parents of the other child - or even each other? As Pete and Maddie are stretched to breaking point, they realize they will stop at nothing to keep their family together. Last Tango in Halifax Season 1 | BritBox Exclusive | 6 x 60' | Released All at Once Childhood sweethearts Alan (Derek Jacobi) and Celia (Anne Reid), both widowed and in their 70s, fall for each other all over again when they are reunited on the internet after nearly 60 years. Their relationship is a celebratory tale of the power of love at any age. But this is also a story about family, and with family comes baggage. Celia's respectable, head teacher daughter Caroline (Sarah Lancashire) is juggling bringing up two boys and dealing with her husband's infidelity, while Alan's rebellious, complicated middle-aged daughter Gillian (Nicola Walker) struggles to make a living on a beautiful but bleak farm. How will these two very different women cope with their parents' announcement that they've decided to get married? Last Tango in Halifax Season 2 | BritBox Exclusive | 6 x 60' | Released All at Once The Bafta-winning comedy drama about romance and second chances returns as the reunited childhood sweethearts negotiate family baggage to plan a life together. Having come so close to losing each other forever thanks to Alan's (Derek Jacobi) near-fatal heart attack, he and Celia (Anne Reid) decide to have a romantic secret wedding as soon as possible. But how will their respective daughters react? The uptight Caroline (Sarah Lancashire) and rebellious Gillian (Nicola Walker) are discovering they actually quite like each other; however, Gillian's need to own up to her night with Caroline's ex-husband John could jeopardize the soon-to-be stepsisters' fledgling friendship. As secrets from the past come tumbling out and family members adjust to changing relationships, can Alan and Celia find the long-awaited happiness they deserve? 15 Must-Watch TV Shows on BritBox Right Now (July 2025) Last Tango in Halifax Season 3 | BritBox Exclusive | 6 x 60' | Released All at Once The latest series of this acclaimed ensemble drama sees Celia (Anne Reid) and Alan's (Derek Jacobi) marriage tested by revelations about an incident in his past. As his daughter Gillian (Nicola Walker) tries to deal with the dramas of her own complicated love life, Caroline (Sarah Lancashire) has settled into happy