Another theme could be deception. Maybe the 'I love blondes' aspect is a cover - up for something else. In a mystery novel, a character might claim to love blondes as a way to mislead others while they are actually involved in some illegal or unethical activity that forms the core of the mystery.
One possible theme could be obsession. If someone loves blondes, it might lead to an obsessive behavior that gets entwined with a mystery. For example, a character might be obsessed with a blonde woman and this obsession could be at the center of a mystery, like a disappearance or a murder mystery.
As I'm not familiar with this 'I love blondes' novel, it's impossible to say what the plot is. However, if we assume it's a love - centered story, perhaps it follows a character who has a deep - seated preference for blondes and the challenges they face in their pursuit of love with a blonde character. It could also involve themes of jealousy, friendship, and self - discovery within the context of this love for blondes.
I'm not sure if there are specific mystery novels directly related to 'I love blondes' in a very literal sense. But some mystery novels with strong female characters who are blondes could be considered. For example, the 'Millennium' series by Stieg Larsson features Lisbeth Salander, a blonde who is a complex and interesting character in a mystery - thriller setting.
One possible theme could be the search for identity. Since it's a mystery involving a girl, she might be on a journey to discover who she really is. Another theme could be secrecy. Mysteries often involve secrets that need to be uncovered.
Growth could also be a theme. As he pursues the girl he loves, he might grow as a person. He could face rejections and setbacks that force him to become stronger and more understanding. This growth might not only be in terms of his romantic side but also in his general attitude towards life and relationships.
These stories might often explore themes of taboo, forbidden desires, and racial dynamics. But it's important to note that such themes can be quite controversial and not everyone finds them appropriate.
Isolation and connection. The monster is usually isolated because of its nature, and the love story shows a connection being made. Also, transformation might be a theme. The love could potentially transform the monster or the person in the relationship.
This kind of story can be quite diverse. It might involve cultural differences, personal growth, and unexpected emotions.
Common themes could include the exploration of unconventional attractions, challenges of societal expectations, and the complexity of personal preferences. It could also touch on themes of self-discovery and acceptance.
I'm not sure specifically which novels are titled 'I love blondes'. There could be many novels with various themes related to blond characters. You might try searching in a large library database or an online book store using that exact title to see if any relevant results pop up.
A theme of redemption could also be present. There could be a character who has made mistakes in the past, and the Christmas mystery gives them the chance to make amends. As they help solve the mystery, they find their own path to redemption during this special time of year.