Volume 26
Yostin Mosquera: What Have You Got There?

Volume 26 · Chapter 11

What Have You Got There?

Yostin Mosquera

Victims: Albert Alfonso · Paul Longworth

Shepherd’s Bush, west London, and the Clifton Suspension Bridge, Bristol, England 3 photos

Case at a glance

When
July 2024
Where
Shepherd’s Bush, west London, and the Clifton Suspension Bridge, Bristol, England
Perpetrator
Yostin Andres Mosquera
Victims
Albert Alfonso, Paul Longworth
Outcome
Convicted of both murders on July 21, 2025, and sentenced on October 24, 2025, to life with a minimum term of 42 years, reduced to 40 years and 264 days for time on remand

The case

Albert Alfonso and Paul Longworth had been together about twenty years and lived in a flat in Shepherd’s Bush, west London. Alfonso, sixty-two, was a swimming instructor; Longworth, seventy-one, was a handyman who had recently retired. Yostin Mosquera, a thirty-four-year-old adult film performer from Medellín, Colombia, had been their guest before and came back in June 2024.

On July 8, 2024, around midday, Mosquera killed Longworth with a hammer while Alfonso was out. That night he cut Alfonso’s throat during a filmed session, using a knife he had hidden. Three weeks earlier he had been pricing chest freezers, and on July 4 he set about having one delivered. On the morning of the killings he searched for where a blow to the head would be fatal. He dismembered both men, left their heads in the freezer and packed the rest into two suitcases.

He hired a van to Bristol, planning to drop the cases into the Avon Gorge from the Clifton Suspension Bridge. Passersby saw blood seeping from them and challenged him, and he ran. Police arrested him at Bristol Temple Meads station on July 13. A first trial collapsed in May 2025; a jury at Woolwich Crown Court convicted him of both murders on July 21, 2025, and on October 24 Mr Justice Bennathan jailed him for life with a minimum of forty-two years.

From the book

Read the full story

This case is told in full in True Crime Case Histories, Volume 26 by Jason Neal.

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Case photographs

3 photos
Albert Alfonso
Albert Alfonso
Paul Longworth
Paul Longworth
Yostin Mosquera
Yostin Mosquera

Where it happened

Shepherd’s Bush, W12
Shepherd’s Bush, the west London flat shared by the two victims · Open in Google Maps

Why this case

“It is the planning that the sentencing judge fixed on, and that is what I would ask readers to sit with. Mosquera was pricing a chest freezer three weeks ahead and looked up where to strike a fatal blow on the day itself. Albert Alfonso and Paul Longworth had built twenty quiet years, and he ended both in a day.”

Jason Neal, author of True Crime Case Histories

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About the author

Jason Neal writes the True Crime Case Histories series, which has covered hundreds of real cases from the United States and around the world since 2019. Each volume collects twelve cases, researched from court records, police reports and news coverage. jasonneal.com

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