"that was Philip's only job, as I believe it was in real life. But since he's got another cover to maintain, that complicates things"

I agree, when he called her to tell her his flight had been cancelled, I cringed and thought, "This is gonna bite you on the ass if you don't watch it. She's going to start wondering how many of these "accidents" and "cancellations" are real." At best, it would be a divorce. At worst, she'd figure it out.