Perhaps her biggest role was in another Hammer production, Captain Clegg (1962), aka Night Creatures (US title), playing alongside Peter Cushing and Oliver Reed again, this time as his fiancée. She also appeared alongside Sean Connery twice, in Action of the Tiger (1957), and the gangster film The Frightened City (1961), where she shared equal billing with the pre-Bond star. Romain also co-starred in the Danger Man episode titled Sabotage in 1961, and in the 1964 mystery film Smokescreen alongside Peter Vaughan.