Singer-turned-actor Lee Joon made a cameo appearance on the 19th episode of SBS’ drama “Pinocchio,” aired on Wednesday.Lee Joon played the part of Fama, a celebrity suspected of habitually injecting the drug propofol.In the back-to-back episodes aired on Wednesday, Seo Bum-Jo (Kim Young-Kwang)’s mother Kim Ro-sa (Kim Hae-Sook) exposes the drug scandal of Fama (Lee Joon) in a desperate attempt to deflect public criticism of her, but the scheme fails as Fama’s enthusiastic fan Yoon Yoo-rae (Lee Yoo-Bi) proves his innocence. This episode parodied a real-life drug scandal of a celebrity that took place in Korea last year. Meanwhile, Kangnam of boy group M.I.B is set to make a cameo appearance in the final episode. The finale of the 20-episode series is slated to air on Thursday, Jan.15.By Hong Hye-jin (honghyejin@heraldcorps.com)