Collected Works, a spunky independent bookstore on Wellington Street in Ottawa, Chapters Pinecrest, and Chapters Kanata. Blood Passage is also available in these three stores.
If you don't live in the Ottawa area, or even in Canada, but would like to get your own paperback copies from your local bookstore, all you need to do is go in and ask them to order it. The books are available to stores through the catalogs of distributors such as Ingram and Baker & Taylor, and your favorite store should be able to find it for you. In Canada, Chapters is an exception to the rule, which is why I have to go in and place the books with them individually on a consignment basis, but independent bookstores march to the beat of a different drummer and should be able to find Donaghue and Stainer for you if they have online access to the aforementioned catalogs.
One more local note: I have scheduled book signing events in these three stores to take place in late May and early June. Stay tuned for more information!