Down goes Oland, bod bloated from gin
Dig a hole and then notify kin
With a void there'd be losses
Which annoyed all the bosses
And behold, Lorre's Moto steps in.
Apparently Mr. Moto's Gamble (1938) was taking on a whodunit script originally written for Charlie Chan. But the failing health of star Warner Oland stopped production on Charlie Chan at the Ringside, the Oland footage was scrapped, and the script rewritten for Peter Lorre's Mr. Moto series.