When your boss is at a conference in a city where there’s a suspicious death, it’s unlucky.
If it happens twice, it’s odd.
But when she’s in the same city at the same time as a third unexplained death . . .
Could she be a stone-cold killer?
Millie’s always known her boss Freya is a psycho – the demanding and ever-changing coffee orders, the cryptic instructions, the apparently expected mind reading and don’t even start on the insistence that Millie wears heels . . . All. The. Time.
But it only extends as far as exacting office standards. Right?
As Freya’s assistant, Millie has privileged access to her diary and travel history and when a pattern emerges of men (who seem to have no connection to each other) dying in cities where Freya is travelling, Millie is determined to figure out what’s going on.
After all, a stone-cold killer could be exactly what Millie needs . . .

The ‘How To Slay‘ books are standalone novels with a common theme of women who kill. ‘How To Slay At Work‘ is the first book in the series. I picked it up because I’d enjoyed the dark humour and even darker rage in ‘How To Slay At Christmas’ (2025), and I wanted more.

‘How To Slay At Work‘ didn’t disappoint. It was great fun. It was also dark and violent. The plot is a little out there, but I let myself suspend disbelief and enjoy the many, many twists and turns of the plot. Trust me, you will not guess where this one is going.

The story was powered by a mixture of rage at misogynistic men and a burning desire for revenge. The body count was outnumbered only by the number of times I had to reassess what I thought I knew about the backstory and motives of the two women at the heart of the story. The locations for the kills were relatively glamorous, the kill methods were inventive, and the action scenes were vivid and tense. There was some humour, mostly at the expense of the unpleasant men being described, but mostly this was a tense thriller. The pacing worked well. Sarah Bonner kept me listening eagerly throughout the book and kept me guessing at the outcome right up to the end.

Part of what made the story so gripping was that it was told mostly from two points of view, starting with Millie, then moving back and forth between her and her boss, Freya. Neither woman is exactly who she claims to be. Both have a compelling secret agenda that drives their actions. They lie to each other and attempt to use each other. They each have dark backstories that, as they were revealed, changed my perception of who they were and what they wanted. 

I recommend the audiobook, which uses a different narrator for each point of view. This made the story easier to follow and highlighted the differences between the two women. Click on the YouTube link to hear a sample..