Arthur Conan Doyle's most famous characters, Sherlock Holmes and his stalwart partner Watson, will hit the silverscreen on December this year.

Robert Downey Jr. brings the legendary detective to life as he has never been portrayed before. Jude Law stars as Holmes’ trusted colleague, Watson, a doctor and war veteran who is a formidable ally for Sherlock Holmes. Rachel McAdams stars as Irene Adler, the only woman ever to have bested Holmes and who has maintained a tempestuous relationship with the detective. Mark Strong stars as their mysterious new adversary, Blackwood. Kelly Reilly will play Watson’s love interest, Mary.

Directed by Guy Ritchine, the big screen adaptation of Sherlock Holmes is set to premiere on December 25, 2009.

VIDEO LINK: Sherlock Holmes – Official Movie Trailer