sherlock 302 pbs main martin freeman benedict cumberbatch 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'

Shortly after Sherlock Holmes (Benedict Cumberbatch) returns in “Sherlock” Season 3, another big change will follow: Dr. John Watson (Martin Freeman) will be getting married. Sherlock can cheat death, but can he handle a wedding?

Photos from the season’s second episode, “The Sign of Three,” indicate that this might not be the easiest thing for the great detective.

In addition to Watson’s marriage to his new lady, Mary Morstan (Amanda Abbington), the episode deals with a new case. The details of it remain vague, even if Sherlock and Watson do have to confront a soldier in order to find the truth.

sherlock 302 pbs 1 martin freeman benedict cumberbatch 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'The men will need to heal the sizable rift that developed due to Sherlock’s non-death and Watson’s insistence on marrying a woman.

sherlock 302 pbs 2 martin freeman benedict cumberbatch 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'It may not be too easy.

sherlock 302 pbs 3 benedict cumberbatch 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'
sherlock 302 pbs 4 martin freeman 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'Some part of the case involves a woman named Tessa (Alice Lowe).

sherlock 302 pbs 5 tess alice lowe 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'The duo may also face a new villain, Charles Augustus Magnussen (Lars Mikkelsen).

sherlock 302 pbs 6 charles augustus magnussen 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'Whether the case gets solved or not, Sherlock and Watson have a wedding to get to.

sherlock 302 pbs 7 watson wedding 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'Can Sherlock actually give a best man speech without being awful? That may be the biggest mystery of all.

sherlock 302 pbs 8 cumberbatch speech 'Sherlock' Season 3 photos: Watson's wedding in 'The Sign of Three'“Sherlock” Season 3 premieres Jan. 1 in the U.K. and on Jan. 19 on PBS in the U.S.