Ah, Alice and Rodney, that early 20th century brother- sister team of kid sleuths who explore ruins and historical sites for their own reasons while their archeologist/treasure hunter/wealthy dabbler in the occult/singleminded artist/secretly criminal/neglectful rich idiot parents aren’t paying attention. Or maybe Alice and Rodney are archeologists themselves, or criminals, or dabblers in the occult. (“Gosh, sis, the illustrations in these old books aren’t half creepy!)
Regardless, they are up to no good as far as the adult world is concerned, but as long as they are tidy and polite, no one in authority is going to take them seriously. And that’s just the way Alice and Rodney like it.
(This illustration is crying out to be colored. Finished Alice and Rodney drawings will have to involve a ruler and a straight edge at some point.)