In "Obsession," the latest volume in the continuing sexual and romantic adventures of four female friends, the plot expands to include some of the downsides of online dating, pitfalls of poly triads and the frustrations of the sexually addicted.

Dee’s ongoing romance with a married couple (Kylie Ireland and Steve Hatcher) turns ugly when hubby’s irrational jealousy goes totally out of control. Asia Carrera goes online and meets a boxer, played by Alex Sanders, who seems nice enough until he becomes the invisible man.

Keri Windsor’s inability to say "no" and mean it takes her to the shrink (Kyle Stone),where she flashes her coochie in an attempt to add him to her collection. Nina Hartley, nursing a broken heart, finds solace from a friendly attorney (Eric Masterson) who understands the importance of customer service.

Lots of plot, lots of dialogue, but not so much that it detracts from the sex. Good work all around.