Last of Fox's eight "Mr. Moto" features starring Peter Lorre, but actually the seventh to be released (though completed two months earlier, Mr. Moto Takes a Vacation was issued last). This was also the second "Mr. Moto" entry (after Mr. Moto's Gamble) that was originally written as a "Charlie CHan" script (and both entries were the only ones not directed by Norman Foster). The character returned only once, in a low-budget, black-and-white second feature produced in England, The Return of Mr. Moto, starring Henry Silva.
The original script was a Charlie Chan murder mystery titled "Charlie Chan at Trinidad" to star Warner Oland. However, due to Oland's untimely death, the entire script was re-written in only a few weeks to star Peter Lorre as his Mr. Moto character.