Kerttu Niskanen, a celebrated Finnish cross-country skier and an avid fan of the television series 'Salatut elämät', fulfilled her dream by guest-starring in the show. She is seen in two episodes, appearing as herself alongside her husband Juho Mikkonen. This is particularly significant for Niskanen, as she has been a fan of the series since its premiere in January 1999, when it first introduced viewers to the mysteries surrounding a character named Tyyne Puustinen.

Niskanen expressed her excitement in an interview with Ilta-Sanomat, sharing her dream of visiting the set of 'Salatut elämät' and how surreal it felt to meet the actors in person. Her appearance was filmed at the studio in Konala, Helsinki, revealing the strong connection she has cultivated with the show over the years. Her love for the series not only reflects her personal interests but also speaks to the show's cultural significance in Finland.

The event showcases a unique crossover between sports and entertainment, demonstrating how popular media can resonate with public figures. Niskanen's participation in the series highlights the interplay between Finland's sporting achievements and the local pop culture landscape, engaging fans from both domains and creating a buzz among her followers and the series' viewers alike.