1
The detective solved the murder.
To express this, sign 'detective', 'solve', and then use the quick, thrusting motion of 'murder' to complete the thought. Make sure your non-dominant hand stays still while your dominant index finger strikes forward. Ensure your facial expression matches the serious tone of the sentence.
2
I am reading a murder mystery book.
Begin by signing 'I' and 'read', followed by 'murder', 'mystery', and 'book'. When signing 'murder', keep your non-dominant hand steady as your dominant index finger slides past it in a sharp motion. Maintain an engaged, serious expression to reflect the genre of the book you are describing.
3
The news reported a murder.
Start with the signs for 'news' and 'report', and then perform the 'murder' sign by thrusting your dominant index finger forward past your flat non-dominant hand. Keep the movement sharp and deliberate, and use a solemn facial expression to appropriately convey the heavy nature of the news report.