With Eth Clifford's 1979 chapter book Help! I'm a Prisoner in the Library (which I found and read on Open Library), there is a huge snowstorm starting just as sisters Mary Rose and Jo-Beth (who are ten and eight years of age respectively, but that in my humble opinion, especially Jo-Beth is hugely aggravating as a character, is irritating and also with a bit of a narcissistic tendency since she is textually presented by Clifford in Help! I'm a Prisoner in the Library as rather frustratingly self centred and always needing to be right and having the last word) are being driven by their father to their aunt Madge's house because their mother is at the hospital (a new brother or sister is about to be born).
But when the father (who is known as Last Minute Harry in his family because he always leaves things until the last minute and who for me as an adult reader definitely displays ADHD symptoms with regard to his constant procrastination and impulsivity) refuses to stop for gasoline (and this even though his young daughters keep pointing out that the gauge is indicating "empty") and then of course runs out of petrol on the road, he (Harry) instructs his daughters to wait in the car with the doors locked while he takes a petrol can and looks for a gas station. And yes, this sure feels kind of like potentially problematic and dangerous advice for two young girls in a snow storm, and the father suggesting that Jo-Beth and Mary Rose just use a blanket to keep warm in the disabled vehicle whilst he leaves them totally alone is rather cringe-worthy as well although I do not think that the author, that Eth Clifford is actually intending this, that the father in Help! I'm a Prisoner in the Library is not meant to be depicted as acting negatively and irresponsibly regarding leaving Jo-Beth and Mary Rose alone in the family vehicle while he goes to find a petrol station, albeit to and for me this does feel and sound rather irresponsible and as such should also be receiving some authorial criticism (but no, this unfortunately does not really ever happen in Help! I'm a Prisoner in the Library and is at best just very briefly and insufficiently alluded to and simply accepted by Clifford).
So yes, at first, our two main protagonists for Help! I'm a Prisoner in the Library, they are shown by Eth Clifford's text as obeying their father and staying put in the car (and in an increasingly violent blizzard). But when Jo-Beth realises that she has to use the bathroom, she and Mary Rose leave the vehicle, venture out into the snow to head for the local public library (which is actually a converted mansion) in order to find a restroom. And albeit they do not mean to, the two sisters wind up staying past closing time and when they try to leave, they find themselves locked in the library with the (slightly injured) librarian, with the snowfall getting worse and worse (in other words being dangerous) and the rest of the night of Help! I'm a Prisoner in the Library textually filled by Clifford with spooky noises, strange looking shadows, a stranded kitten and Jo-Beth and Mary also and finally teaming up with the librarian to try to get an SOS message out that they are stranded at the library, since the phones are out because of the blizzard and their father thinks his daughters might have been the victims of foul play (as is being related via the radio and freaks out both the two girls and the librarian). But indeed, the phones being out means not being able to use any kind of phones, period, as Help! I'm a Prisoner in the Library with its 1979 publication date of course also means no cell phones, laptops, iPads etc.
Not a horrible story is Help! I'm a Prisoner in the Library (and a tale that I would have mildly enjoyed when I was nine or ten years of age, although even as a child, I would have wanted more narrative meat so to speak in particular regarding the blizzard, and as already mentioned above, the father's irresponsible behaviour and Jo-Beth's irritating personality would have kind of bothered and frustrated even childhood me). But indeed, for me as an adult reader, Eth Clifford's penmanship for Help! I'm a Prisoner in the Library is stilted, all of the presented characters are undeveloped and not all that interesting and that my average rating from both my adult reading self and my inner child thus can and will only be two stars, a pretty high two stars to be sure, but I just do not really think that Help! I'm a Prisoner in the Library is worth a three star rating. And since Help! I'm a Prisoner in the Library is the first instalment in a series, my two star rating also means that I am definitely not interested in trying any of the sequels either.
Finally, I also should point out that the public library in Help! I'm a Prisoner in the Library is also (at least in my humble opinion) just some random building, for if Eth Clifford's story were actually in any way specifically about where Jo-Beth and Mary Rose are stranded during the blizzard, there should really be textual information regarding library books being provided by Clifford and maybe the two girls and the librarian also using library's books to find a way to get rescued (instead of those fun but also silly fireworks).