Joining "20/20" shortly after its launch in 1978, Jarriel produced hard-hitting stories over his 23 years on the program, focusing on serious stories such as the plight of child victims of civil wars and famine. One of his most defining contributions was a decade-long investigation into the horrendous conditions of Romanian orphans, revealing the shocking realities of state-run institutions where many children were kept in deplorable conditions.

Remembered for his empathetic yet stark reporting style, longtime producer Janice Tomlin remarked, "We did not do happy stories together," emphasizing the gravity of their joint assignments. Jarriel’s work has left an indelible mark on the landscape of broadcast journalism, highlighting the struggles of the marginalized and forgotten. His legacy will continue to inspire aspiring journalists and bear witness to the power of storytelling in effecting change.