Michael Douglas made a cameo in Manhattan Federal Court Friday on behalf of his son - but it wasn't a speaking role.
"I have absolutely no comment," the Oscar-winning "Wall Street" star said as he left the courthouse.
He was there to sign paperwork so his son, Cameron, can get out on bail while awaiting sentencing in a drug dealing case, sources said.
The bail hearing before Magistrate Ronald Ellis was sealed, along with court transcripts - usually a sign that a suspect is cooperating in an investigation.
Cameron Douglas, 31, pleaded guilty earlier this week to dealing crystal meth and cocaine out of a trendy Meatpacking District hotel.
He faces a minimum 10-year prison term at sentencing on April 27.
An informant had told investigators that the grandson of Kirk Douglas was the middleman in a deal to move a half-pound of crystal meth from California to New York.
"I began supplying on a regular basis" starting in 2006, the bit-part actor and deejay told the judge when he pleaded guilty.
After he was busted, Cameron Douglas was under house arrest at mom Diandra's $9 million townhouse - until his girlfriend, Kelly Scott, was caught smuggling heroin to him in the battery compartment of an electronic toothbrush.
His famous father issued a statement then saying the family was "devastated and very disappointed in Cameron's recent behavior."
As a result of Fridayy's closed-door hearing, Cameron Douglas will be allowed leave federal lockup and go home until his sentencing.
He will be required to use an electronic monitoring system, sources said.
The bust at the Hotel Gansevoort wasn't Cameron Douglas' first run-in with the law.
He was previously busted in New York for buying drugs in 1999 and arrested in 2007 in California on cocaine possession charges.