Three-year-old Clark or Books was abducted from his home in Fairfield, California on the night of August 23, 1984. His mother discovered the window by his bunk bed open and Clark missing.

There was a ransom note at the scene telling Clark's family to meet the kidnappers at a rendezvous point and exchange an undisclosed amount of money for him. Clark's family complied with the demands from the ransom note, but the kidnappers never arrived and Clark has not been seen since.

Clark's parents separated a month before his abduction. His family is not wealthy and his mother comes from a modest home which makes him an unusual target for a ransom kidnapping. His family believes that Clark is still alive and he'll return back to them.

In April of 2016, a man named Michael Anthony Blas Fejarang was charged with kidnapping for ransom and first-degree murder with special circumstances in Clark's case. Fejarang was a family friend who lived in Fairfield and was 23 years old at the time of Clark's disappearance. Fejarang plead no contest to murder charges and was sentenced to 25 years to life in 2017.

Investigators have not reported if they have located Clark's body.

Clark goes by the nickname Books or his middle name Toshiro. He was last seen wearing a long-sleeved two-tone brown-striped pullover shirt and red pajama pants. He sucked his thumb when he was upset during the time of his abduction.