{"id":235692,"date":"2026-04-20T23:01:04","date_gmt":"2026-04-20T23:01:04","guid":{"rendered":"https:\/\/entertainment.runfyers.com\/index.php\/2026\/04\/20\/who-plays-maggies-secret-husband-liam-on-sullivans-crossing-what-to-know-about-marcus-rosner\/"},"modified":"2026-04-20T23:01:04","modified_gmt":"2026-04-20T23:01:04","slug":"who-plays-maggies-secret-husband-liam-on-sullivans-crossing-what-to-know-about-marcus-rosner","status":"publish","type":"post","link":"https:\/\/entertainment.runfyers.com\/index.php\/2026\/04\/20\/who-plays-maggies-secret-husband-liam-on-sullivans-crossing-what-to-know-about-marcus-rosner\/","title":{"rendered":"Who Plays Maggie\u2019s Secret Husband Liam on \u2018Sullivan\u2019s Crossing\u2019? What to Know About Marcus Rosner"},"content":{"rendered":"


\n<\/p>\n

\n

Marcus Rosner<\/strong> plays a pivotal role<\/a> on season 4 of Sullivan\u2019s Crossing<\/em> as Maggie\u2019s secret husband, Liam.<\/p>\n

Season 3 of the hit series, which started streaming<\/a> on Netflix in August 2025, initially hinted at Maggie\u2019s (Morgan Kohan<\/strong>) ex when she mentioned Liam (Rosner) to Lola (Amalia Williamson<\/strong>) as a summer fling she had met before finishing medical school. After a meet-cute while on a trip abroad, Maggie and Liam fell out of touch.<\/p>\n

Liam was brought up again when Cal (Chad Michael Murray<\/strong>) found letters Maggie had written to Liam explaining why their relationship couldn\u2019t work long-term because she wanted to prioritize her career.<\/p>\n

The rest of the season focused<\/a> on Maggie and Cal\u2019s relationship. Despite them not being an official couple, they faced several challenges, including Cal reconnecting with his estranged father who was battling a terminal illness.<\/p>\n

\n\t\t\t<\/p>\n
\n
<\/div>\n<\/figure>\n

\t\t<\/a><\/p>\n

\n

\n\t\t\t
\n Related: <\/span>Meet the Season 4 Cast of ‘Sullivan’s Crossing’ After Secret Husband Reveal<\/span><\/a>
\n\t\t<\/h3>\n<\/p><\/div>\n

\n\t\t\tSeason 4 of Sullivan\u2019s Crossing will be picking up the pieces after Cal met Maggie\u2019s secret husband \u2014 but who else is expected to appear? Based on the book series by Robyn Carr, Sullivan\u2019s Crossing centers around neurosurgeon Maggie (Morgan Kohan) after she moves back home to rural Nova Scotia to reconnect with her estranged [\u2026]\t\t<\/p>\n<\/div>\n

After Maggie supported Cal through the difficult reunion, they returned to Sullivan\u2019s Crossing<\/em>, where he asked her to move in with him. They started planning their future just as the season came to an end, which is when a guest who checked in earlier that day revealed himself to be Liam. He then shocked Cal by referring to himself as Maggie\u2019s husband.<\/a><\/p>\n

Season 4, which premiered on The CW on Monday, April 20, will feature flashbacks that offer more insight into Liam and Maggie\u2019s romance before she moved to Canada. Keep scrolling for everything to know about Rosner:<\/p>\n

What Did Marcus Rosner Star in Before \u2018Sullivan\u2019s Crossing\u2019?<\/h2>\n
\n
\"Falling<\/div>
Courtesy Johnson Production Group<\/span><\/figcaption><\/figure>\n

Marcus Rosner\u2019s most notable roles include UnREAL, Arrow, Supernatural <\/em>and Once Upon a Time<\/em>. He has also been a very consistent presence in Hallmark movies<\/a> such as Autumn In the Vineyard, Love on Harbor Island, Romance to the Rescue, Flipping for Christmas, Love on the Right Course<\/em> and Falling Like Snowflakes<\/em>.<\/p>\n

What Has Marcus Rosner Shared About His Personal Life?<\/h2>\n

In December 2020, Rosner announced his engagement to longtime girlfriend Alison Kroeker.<\/strong> They got married one year later. In January 2026, the couple welcomed their first child.<\/p>\n

What Did the Cast Know About Liam Before His \u2018Sullivan\u2019s Crossing\u2019 Debut?<\/h2>\n

Morgan Kohan previously teased the surprise twist, telling Swoon in July 2025, \u201cI remember hearing a little bit [about Liam early in season 3]. I didn\u2019t know they were married. There started to be talk when we filmed the scene with Lola and having summer flings. I knew that he was going to be coming into it, but I didn\u2019t really know when or in what capacity. That cliffhanger was so much fun for me to read as well.\u201d<\/p>\n

Kohan acknowledged that Maggie\u2019s trepidation about getting serious with Cal could have come from her past with Liam, adding, \u201cI feel like it came up so last minute that I didn\u2019t really have time to think about it, but I think it definitely would. It makes a lot more sense, for sure, for her to be more hesitant.\u201d<\/p>\n

The actress noted that she was just as in the dark about Liam\u2019s role in season 4 as the audience.<\/a><\/p>\n

\u201cAt the same time, I still don\u2019t know the history, so who knows when we get to find out a bit more of that information, what he really means that he\u2019s her husband and all that kind of stuff,\u201d she continued. \u201cI mean, there\u2019s gonna have to be a few conversations had [between Maggie and Cal]. It\u2019s going to be a trust thing to have to build up again because that is a pretty big thing to leave out.\u201d<\/p>\n

\n\t\t\t<\/p>\n
\n
\"Who<\/div>\n<\/figure>\n

\t\t<\/a><\/p>\n

\n

\n\t\t\t
\n Related: <\/span>Who Is Liam on ‘Sullivan’s Crossing’? Maggie’s Husband Reveal Explained<\/span><\/a>
\n\t\t<\/h3>\n<\/p><\/div>\n

\n\t\t\tSullivan\u2019s Crossing took a surprising turn when Cal met Maggie\u2019s secret husband \u2014 but who exactly is Liam? Season 3 of the hit series, which started streaming on Netflix in August 2025, initially hinted at Maggie\u2019s (Morgan Kohan) ex when she mentioned Liam (Marcus Rosner) to Lola (Amalia Williamson) as a summer fling she had [\u2026]\t\t<\/p>\n<\/div>\n

Could Liam Break Up Cal and Maggie on \u2018Sullivan\u2019s Crossing\u2019?<\/h2>\n
\n
\"Sullivan\u2019s<\/div>
Jessie Redmond\/Fremantle \u2014 \u00a9 2026 Fremantle<\/span><\/figcaption><\/figure>\n

Showrunner Roma Roth<\/strong> teased what the newcomer\u2019s arrival meant<\/a> for Maggie and Cal.<\/p>\n

\u201cThere\u2019s never a dull moment at Sullivan\u2019s Crossing,\u201d Roth told Collider in July 2025. \u201cA romance drama series needs to have push and pull between your characters \u2026 we\u2019re going to have a pretty big shoe drop at the end of the season that we\u2019ll get to see play out in season 4.\u201d<\/p>\n

Roth said she wanted season 3 to reflect the theme of \u201csecond chances,\u201d sharing, \u201cThese characters have been through a lot over two seasons. We wanted to give them an opportunity to explore love. I think that\u2019s what we actually even called one of the scripts.\u201d<\/p>\n

Roth concluded: \u201cBecause we\u2019re dealing with a lot of emotional issues we wanted to have some lightness and levity this season, by giving people a reprieve and having them have some hope and positivity in their lives. Continuing the journey from the head to the heart \u2014 with emotion and drama and a few surprises.\u201d<\/p>\n

\n
\n\t\"\"
\n\t\"\"<\/p>\n