Standoff At Midnight Mountain

Her brother is missingAnd she's the next targetAfter her CIA operative brother disappears, leaving behind only a cryptic message, armed men target former agent Rachel Simmons for information. But with help from her ex, Agent Alex Booth, Rachel eludes them, trekking into the mountains in search of her brother. Pursued through the wilderness by highly trained and very familiar men, can Alex and Rachel expose a conspiracy that goes deeper than they ever imagined?