Regardless of controversy, five films at Universal – "The Black Cat" (1934), "The Raven" (1935), "The Invisible Ray" (1936), "Son of Frankenstein" (1939), "Black Friday" (1940), plus minor cameo performances in "Gift of Gab" (1934) and two at RKO Pictures, "You'll Find Out" (1940) and "The Body Snatcher" (1945) – paired Lugosi with Boris Karloff. Despite the relative size of their roles, Lugosi inevitably received second billing, below Karloff. There are contradictory reports of Lugosi's attitude toward Karloff, some claiming that he was openly resentful of Karloff's long-term success and ability to gain good roles beyond the horror arena, while others suggested the two actors were – for a time, at least – good friends. Karloff himself in interviews suggested that Lugosi was initially mistrustful of him when they acted together, believing that the Englishman would attempt to upstage him. When this proved not to be the case, according to Karloff, Lugosi settled down and they worked together amicably (though some have further commented that the English Karloff's on-set demand to break from filming for mid-afternoon tea annoyed Lugosi). Karloff also insinuated that his rival could not act, claiming Lugosi had "never learned his trade". A small percentage of critics cited his "dull and slow performance" in "Dracula" as a great example of minimal dialogue with no real acting prowess needed. Lugosi did get a few heroic leads, as in Universal's "The Black Cat" after Karloff had been accorded the more colorful role of the villain, "The Invisible Ray", and a romantic role in producer Sol Lesser's adventure serial "The Return of Chandu" (1934), but his typecasting problem appears to have been too entrenched to be alleviated by those films.