If you wondered why Cameron Douglas‘ stepmother (Catherine Zeta-Jones) and his grandfather (Kirk Douglas) asked a judge for leniancy, but his father, Michael Douglas, was silent, well, Michael has finally come forward to show his support. The Oscar-winning actor penned a heartfelt letter to Judge Richard Berman in a bid for him to show mercy on 31-year-old Cameron, who is to be sentenced for drug dealing and possession today. Michael wrote: “I have some idea of the pressure of finding your own identity with a famous father. I’m not sure I can comprehend it with two generations to deal with.” He also blames some of Cameron’s actions on his family background. He said: “He is an adult and responsible for his own actions. We do know, however, that genes, family and peer pressure are a strong influence on a substance abuser.” In the handwritten five-page letter, Michael, 65, notes many members of the Douglas family have struggled with addiction. He says Cameron grew up a single child in a “bad marriage” and his acting career often took him away from home but Cameron is now completely “sober.” Cameron faces up to 10 years in jail.