The disgraced 65-year-old economist finds himself back in the dock -- this time in the northern French city of Lille -- accused of being at the centre of a vice ring which hired prostitutes for sex parties in Brussels, Paris and Washington.
The silver-haired Strauss-Kahn, dressed in a dark suit, slipped past a throng of journalists to arrive in the empty wood-panelled courtroom, where he paced up and down with his hands in his pockets in front of the imposing stone bench.
Nearly 300 journalists are accredited to cover the three-week trial, the first day of which will be dominated by a host of procedural applications.
Lurid details of group sex and high-end prostitution are likely to emerge in the trial for "aggravated pimping in an organised group", a charge punishable by up to 10 years in prison and a fine of up to 1.5 million euros ($1.7 million).
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The ex-head of the International Monetary Fund, known in France as DSK, saw his career implode in 2011 when he was paraded handcuffed in front of the world's cameras after a New York hotel maid accused him of sexual assault.
Those criminal charges were dropped and the case settled in a civil suit, but six months later Strauss-Kahn's name cropped up in an investigation into a prostitution ring in northern France and Belgium.
Prostitution is legal in France but procuring -- the legal term for pimping which includes encouraging, benefiting from or organising prostitution -- is punishable by a hefty jail term.
The crux of the case against DSK is whether he knew the women lavishing their attention on him were prostitutes and whether he played a role in organising their presence.
"In these circumstances one isn't always clothed, and I challenge you to tell the difference between a prostitute naked and any other woman naked," DSK's star lawyer Henri Leclerc, 84, said in 2011.