“Children of Men” star Clive Owen set for “Cartagena” Clive Owen and Mark Cuban are heading to Colombia. The “Children of Men” star is attached to “Cartagena,” a story about an undercover agent amid Colombian drug cartels, for Cuban’s 2929 Prods., overseen by veteran producer Marc Butan. Gersh-repped Michael Ross, who penned the horror pic “Turistas” and recently was signed to remake of Icelandic thriller “Jar City,” has been attached to write the screenplay. “Cartagena” centres on an undercover agent who gets caught in a complex plot and must elude drug dealers and international agents if he hopes to survive. The project is named for a city on Colombia’s northern coast that has a colorful history featuring wars, robust economic activity and tourist development.