Here is Browny bringing another English idiom to life!
Dating back to 1675, a “cat-and-mouse game” means “a contrived action involving constant pursuit, near captures, and repeated escapes.” The “cat” is unable to secure a definitive victory over the “mouse”, who despite not being able to defeat the cat, is able to avoid capture. In extreme cases, the idiom may imply that the contest is never-ending.
In this case however, the contest ends with the cat getting caught! And then all it has to do is …
… look innocent! 🙂