I didn't miss that detail. Here is a Perl program that both writes and runs the script under Unix:

my $filename = "Just another Perl hacker,\n";

open (OUT, "> $filename\0") or die "Cannot write '$filename': $!";
print OUT 'die$0';
close OUT;

system "perl '$filename'";
[download]

Do you see where the return is coming from now?