Married at First Sight is back for a season 4. Six new singles are preparing to marry a complete stranger in this controversial social experiment. The participants find out who they've been matched with and have just 2 weeks to prepare for their weddings. The preparations are filled with high emotions as they come to terms with being engaged to a complete stranger.

Today is the wedding day. Six courageous singles looking for love are about to take a huge leap of faith and legally say 'I do' to a complete stranger. Will Derek prove to be the good guy Heather is hoping for? Sonia is attracted to her new husband, but, is Nick attracted to her? Will Lillian's dream of the perfect wedding be washed away by rain?

The brave newlyweds who married as strangers are about to experience time alone for the very first time on their wedding night; will the couples experience a night of passion? Relationship expert, Rachel DeAlto, visits each couple to give them advice before they head off to their honeymoons. Sonia and Nick work on overcoming their insecurities; Heather and Derek start to learn about each other's habits; and as Tom and Lillian grow closer, Tom keeps a secret from Lillian.

The brave newlyweds who married as strangers are about to experience time alone for the very first time on their wedding night; will the couples experience a night of passion? Relationship expert, Rachel DeAlto, visits each couple to give them advice before they head off to their honeymoons. Sonia and Nick work on overcoming their insecurities; Heather and Derek start to learn about each other's habits; and as Tom and Lillian grow closer, Tom keeps a secret from Lillian.

The three couples are still on their honeymoons. As Tom and Lillian grow closer, Tom continues to worry about the secret he is keeping from his new wife; Nick and Sonia reveal their competitive spirit to one another; after a brief stint of hope for Heather and Derek, new conflicts erupt within their relationship.

The honeymoons are over and the couples must decide where they want to live and take the next step by moving in together. Lillian discovers for the first time that Tom lives in a bus; Sonia must come to terms with her fear of dogs as husband Nick has two; Heather and Derek have a sit down with Pastor Calvin Roberson in a desperate attempt to save their already crumbling marriage.

The three couples come face to face with reality and the daily struggles of married life. Tom and Lillian clash on their views of having children; Sonia gets to know her in-laws but she and Nick continue to struggle at communicating effectively; Heather and Derek must decide on their next steps.

The three couples who met and married as strangers tackle emotional and physical intimacy issues effecting their marriages. Lillian and Tom meet with relationship expert Rachel DeAlto; Nick and Sonia visit a tantric healer; Heather and Derek evaluate the future.

The three couples who met and married as strangers continue to navigate married life. Lillian tries to give Tom a memorable birthday; Derek and Heather reflect on their journey so far; Nick feels Sonia pushes him too far.

The cast of the hit reality show Married at First Sight Season 4 respond to the most recently aired episode.

The three couples that were married at first sight learn about the importance of trust in their relationships. Will their marriages flourish?

With the experiment almost coming to a close, the couples spend time with each other’s families on Mother’s Day. Will they get along with their in-laws on their first holiday

Dr. Pepper sends the couples on a second honeymoon in a final attempt to strengthen the marriages into lasting relationships.

As the six-week experiment comes to a close, each of the couples must decide whether to remain married or opt for a divorce.

The relationship experts travel back to Miami to see how the show's participants have fared following their decisions to either remain married or get a divorce.