[3] Due to a lawsuit from Prospect Park, Howarth, along with Kristen Alderson and Michael Easton, were forced to exit their roles in March 2013, only to return as new characters in May of the same year.
[6] In addition to his soap opera work, Howarth has guest starred in television shows such as Prey, The Flash and Dawson's Creek.
[7] Howarth initially resisted acting as a profession and studied political science at George Washington University.
However, after one semester, he dropped out of college to join an intense acting program at the Eugene O'Neill Theatre Center in Connecticut.
[1] Howarth was discovered during a nationwide talent search and was cast in the role of Kent Winslow on the ABC daytime drama Loving.
It was shortly after this that he was cast on the ABC daytime drama One Life to Live as rapist Todd Manning in what was supposed to be a day-player role, but became one of the genre's most successful and enduring characters.
[15] After attempts were made to romantically pair Todd with his victim, Marty Saybrooke, Howarth quit the show in 1995.
In 1998, Howarth departed One Life to Live for a second time, looking to pursue other acting projects both on Broadway and in Hollywood.
He made his first Broadway debut in The White Rose, but also did some theater work in Henry IV, Passions, You Touched Me, Mother Courage, and Orestes.
[18] A prominent stage appearance for Howarth was in James Goldman's Broadway production of The Lion In Winter.
Howarth also continued to portray Todd Manning on Prospect Park's online version of One Life to Live.
[23] Howarth met actress Cari Stahler in New York City when he lived above the café where she worked.