•How did Fisher know Walker was travelling on a false passport, three months before his London arrest?
•Was he informed by the Soviets, who also supplied him with Walker's ‘supposed’ 1934 USSR travel dates? 
•And, who tipped off the British authorities?
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•Would  Walker dared to visit  USSR again in 1934, after being expelled in 1930 for sake of just 5 Hearst articles?
•Wasn’t Journalism a bit of a risky ‘public’ profession for an escaped convict?
•Was he perhaps ‘hiding’ from US authorities, whilst in a Soviet Gulag, from where he was supplied with plausible articles and photos, & recruited to dupe Hearst?
1935 – March to July – The Thomas Walker Affair